Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d2a43038696264…

MALICIOUS

PDF

77.0 KB Created: 2021-02-26 04:01:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5b41b1214e535adbd45670b60a11e446 SHA-1: bb8e1fd3b8b3c067eb41a10a64d51668096cfe82 SHA-256: 18d2a43038696264b2de848ba83354646d1b7e21389d404f2eefc7e9716a7d82
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs, many of which point to disposable hosting and are likely part of a link farm designed to deceive users. One critical heuristic indicates a link to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/123?utm_term=what+are+some+really+good+books+for+young+adults In PDF document text
    • http://fanexaxujuto.22web.org/kenmore_elite_washer_wont_drain.pdfIn PDF document text
    • http://hookup682.site/the_boy_who_harnessed_the_wind_full_movie_free_download_480plmqlk.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/63112219773.pdfIn PDF document text
    • https://vevofuxideg.weebly.com/uploads/1/3/1/4/131405958/475229b.pdfIn PDF document text
    • https://pegiromilu.weebly.com/uploads/1/3/4/6/134683304/kisunu_xuzabawazen.pdfIn PDF document text
    • http://tradestaroffice.com/kimi_no_na_wa_movie_stream5x87f.pdfIn PDF document text
    • https://komomagifagele.weebly.com/uploads/1/3/4/7/134705279/bepegupovederufo.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/dilezetudekafurupidesid.pdfIn PDF document text
    • https://kofagegupuk.weebly.com/uploads/1/3/2/3/132302723/9c8f5a.pdfIn PDF document text
    • https://rajuwirorevub.weebly.com/uploads/1/3/5/3/135306937/safuregabomadopo.pdfIn PDF document text
    • https://rebazizezasij.weebly.com/uploads/1/3/4/5/134586802/venukidofiwu-judamuduwega-dusuk.pdfIn PDF document text
    • https://livuwijonirib.weebly.com/uploads/1/3/4/7/134732661/sufasoteb.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/98844533238.pdfIn PDF document text
    • https://tobalewaluwe.weebly.com/uploads/1/3/4/4/134437424/vazosezojajifux_gakokokuzezelo_tokisuxexogoduj.pdfIn PDF document text
    • https://cdn.sqhk.co/puninuzono/i7jeos2/devil_ninja_fight_1._2_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puzasapexuwuju.epizy.com/whatsapp_profile_pic_in_hd.pdfIn PDF document text
    • http://tovajukoxeboder.epizy.com/thank_you_mama_asian_baby.pdfIn PDF document text
    • http://fibajufe.rf.gd/jiwowegomovevize.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 5640 bytes
SHA-256: 0f45ae2d9c964b597f5ccb1422cdc3d86392de28fa812ad4b35bb890de819dfd
font_01_sfnt_off0001011f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1011F 10980 bytes
SHA-256: 4d1e103a2412df2ddf2b7fd00607f2db47086fa6b3c24d02a2708fc62406d822

Open this report in the interactive analyzer, or submit your own file for analysis.