Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ec7580c1e0c1e4…

MALICIOUS

PDF

78.6 KB Created: 2021-05-07 10:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 3dc0ee0f3ec825e7d346951a65d43156 SHA-1: 25d6ec6b492b8734e85559482c47d98cd80796f8 SHA-256: 03ec7580c1e0c1e437d4d905202a0663a9cde86ba74a6342d5745ea5cfedbec3
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, and is described as a link farm. The presence of external URIs and the ML classification strongly suggest an attempt to redirect users to malicious sites, likely for phishing or malware delivery. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://maypoin.ru/strik?utm_term=what+does+a+pipefitter+helper+do PDF link annotation
    • http://lapegokexixij.medianewsonline.com/60316062534.pdfIn PDF document text
    • http://tewatag.medianewsonline.com/veniwubonetusepurevotodev.pdfIn PDF document text
    • http://zinefikitozozeg.sportsontheweb.net/gearbox_casing_design.pdfIn PDF document text
    • http://mitatufemojo.iblogger.org/40975979438.pdfIn PDF document text
    • http://bobiruropiles.22web.org/53701161300.pdfIn PDF document text
    • http://wumomotetidofe.getenjoyment.net/how_to_use_haier_gas_range.pdfIn PDF document text
    • http://levotavo.scienceontheweb.net/netulupixobeliti.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/vevatepobi.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/68147191584.pdfIn PDF document text
    • http://pedagodogiko.getenjoyment.net/61644438299.pdfIn PDF document text
    • http://tupakewufitid.iblogger.org/all_souls_book_1.pdfIn PDF document text
    • http://wopafopu.22web.org/lixofogewubariwelikeke.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuvidatar.rf.gd/44535682107.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/79984797630.pdfIn PDF document text
    • http://damikofem.rf.gd/2784002709.pdfIn PDF document text
    • http://mokodipixa.epizy.com/99835836546.pdfIn PDF document text
    • http://xezarimupesekal.rf.gd/sodium_chloride_analysis.pdfIn PDF document text
    • http://pekiluji.atwebpages.com/pf_withdrawal_application_form.pdfIn PDF document text
    • http://bopisumeku.atwebpages.com/33150940998.pdfIn PDF document text
    • http://jaziwovapotulit.epizy.com/prt_spiegel_im_spiegel_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/skyrim_how_to_100_smithing.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/what_kind_of_bagels_do_dunkin_donuts_have.pdfIn PDF document text
    • http://nibizuladode.onlinewebshop.net/gua_de_calistenia.pdfIn PDF document text
    • http://fijorolur.myartsonline.com/zawasofonegijofe.pdfIn PDF document text
    • http://zezunas.epizy.com/56794451586.pdfIn PDF document text
    • http://kepewitibafef.myartsonline.com/66002069937.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_off0000f96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96D 5144 bytes
SHA-256: e0b9eb030e96f5b39c8ff4b76ca604c0d9c56c9d153adb71b6a8f7a9e120f5e3
font_01_sfnt_off00010af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF4 10084 bytes
SHA-256: 6c6048b5e1bad822c879b227bb3f48657910d9197967097246975fcf2693e40c

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