Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 a0fa8de8360a0ff5…

MALICIOUS

PDF / .VIR

346.8 KB Created: 2024-02-01 16:18:57 Authoring application: Mobipocket Creator First seen: 2024-07-06
MD5: aab43ed706973efef8916fb0e3003c4f SHA-1: 3efa0cef7393816854ad0993b4a1dbeb67ab95f6 SHA-256: a0fa8de8360a0ff5f767f17b9e551a0807b75332ff0a848865aadad0ec864bcd
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9830

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://zezezadas.lovig.co.za/11643386774771552813351479?rejakofirogabudofedotaduto=gunosawesiworixikizewajodiloposufikusiresuzitopozeworetovuwumuropefixorebumuxebikojivipokonemofuviluwubilezuvelarijobaruxuxamigivugafisowumewubasevelisazudinojuwumiletonewovafukapesevikorakelukagepoliwuru&utm_term=comptia+linux%2B+practice+test&patesenasikujojewupagodekijukividutuwebinirowipiwukagemoti=dowelitejesutetavolefekosezavilijazupivugajudajuzonugawijufajilaxojuzasukidawixavuzurazuwematiwiduvazabozuzepoji PDF link annotation
    • http://japan.road.jp/navi/navi.cgi?jump=226&url=https://uploads-ssl.webflow.com/65ffd522120ce918308bfc0e/66316cddcdaa5f5c3b6ccb39_63856688001.pdfIn PDF document text
    • https://www.yqhd8.com/?url=https://renaultcikma.net/js/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://vexavavojomegiv.gfxtoolkit.com/f/818657697In PDF document text
    • https://djaudits.com/wp-admin/admin-post.php?action=cart_redirected_count&id=77815&url=https://assets.website-files.com/65dc9005ac08330b77a8c9bb/663162d470248fecbf656be5_69842120030.pdf&linkCode=ogi&th=1&psc=1In PDF document text
    • http://flowers.cheapdealuk.co.uk/go.php?url=https://5.imimg.com/data5/SELLER/Doc/2024/4/414939793/UZ/SQ/JH/221083015/95078153780.pdfIn PDF document text
    • https://aathichooditv.com/?download=1&kcccount=https://raquelcasais.com/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://tosabujiluvasil.sentineltr.com/f/1912In PDF document text
    • http://bildhauer-kunst.de/wp-content/themes/eatery/nav.php?-Menu-=https://languagescience.umd.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bivefuzete.salvaralbucardo.com/f/7229In PDF document text
    • http://arskland.ru/bitrix/redirect.php?goto=https://assets.website-files.com/65f02a0d6da2e3540e2e3986/663169141d597cc161bf8a5b_12223190031.pdfIn PDF document text
    • https://eanfh.com/links.do?c=0&t=5400&h=Login.html&g=0&dsmxs=D1A448A399EDFF1ED7BD9EE287CF81B1F41F2D07&link=https://myrapidpos.com/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://janitisomo.supremainmobiliaria.com/f/75522In PDF document text
    • https://archpage.com.tw/vender/ADClick.aspx?C=48753&T=110&H=https://myportal.cccs.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://sugukopejopo.salvaralbucardo.com/f/92234In PDF document text
    • https://testopodia.com/ClientAds/SaveClientAdAPIReponse?id=121&type=Scraper&rIP=66.249.64.73&targetUrl=https://make.duke.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://potad.palsaikbbq.com/f/40897In PDF document text
    • https://specialneedsuk.org/urllink.asp?url=https://artgallery.umd.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://pevufitowerit.supremainmobiliaria.com/f/91908&sc=snIn PDF document text
    • http://igenplan.ru/bitrix/redirect.php?event1=click_to_call&event2=&event3=&goto=https://gocountrytravel.com/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://tulokuresemobe.palsaikbbq.com/f/11738In PDF document text
    • https://inetility.com/st-manager/click/track?id=5857&type=raw&url=https://ohiotech.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://dizebosoruxur.gfxtoolkit.com/f/75350&source_url=https://inetility.com/fe-school-osusume&source_title=%E5%9F%BA%E6%9C%AC%E6%83%85%E5%A0%B1%E6%8A%80%E8%A1%93%E8%80%85%E8%A9%A6%E9%A8%93%E3%81%AE%E3%82%B9%E3%82%AF%E3%83%BC%E3%83%AB%E3%81%8A%E3%81%99%E3%81%99%E3%82%813%E9%81%B8%EF%BC%81%E3%80%90%E5%8D%88%E5%89%8D%E8%A9%A6%E9%A8%93%E5%85%8D%E9%99%A4%E3%81%82%E3%82%8A%E3%80%91In PDF document text
    • https://zezezadas.lovig.co.za/11643386774771552813351479?rejakofirogabudofedotaduto=gunosawesiworixikizewajodiloposufikusiresuzitopozeworetovuwumuropefixorebumuxebikojivipokonemofuviluwubilezuvelarijobaruxuxamigivugafisowumewubasevelisazudinojuwumiletonewovafukapesevikorakelukagepoliwuru&utm_term=coPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0005172f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005172f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005172f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5172F 11824 bytes
SHA-256: 302970978de9a5307c6e18ed92a3d87d71cf96101fbaf7dc83b4e09dfc1cb3b1
font_01_sfnt_off0005338b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5338B 15984 bytes
SHA-256: aa2e76db949970fbb50cb7a4daf4ba9decc6cf6c8c4417fc6491eb40a1540570