Malicious PDF — malware analysis report

Static analysis result for SHA-256 4096442649522fcf…

MALICIOUS

PDF

79.8 KB Created: 2021-02-09 17:43:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5b7db0208d4946c303a7d98dde1b287b SHA-1: 2fe2d0d4b17bb1ddcb5af8f46663f4c8830cd8c5 SHA-256: 4096442649522fcfbedc906395107c511ac076be1ea72137dd6e0765c7712c8a
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ClamAV as Pdf.Phishing.Trojan. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM indicates a link farm strategy, suggesting the document's primary purpose is to redirect users to malicious or scam-related websites. While no scripts were explicitly extracted, the presence of external URIs and the ML classifier's high confidence score point towards a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wb?keyword=annual%20budget%20templates%20excel PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392649/normal_5fd76ce6810e2.pdfIn PDF document text
    • http://kumisaruvejinud.iblogger.org/forgot_password_gmail_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448984/normal_5ff52d141b450.pdfIn PDF document text
    • http://paringljkf.com/11472902863hgucm.pdfIn PDF document text
    • http://mx50off.pro/vebibidipaj8c6m.pdfIn PDF document text
    • https://gunimumatepatu.weebly.com/uploads/1/3/5/3/135313318/112897.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385631/normal_5fe99ae445f20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413008/normal_5fea1ae105faa.pdfIn PDF document text
    • http://particulieres-societegenerale.best/3493793096lijr7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421341/normal_5febbe5fc9791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379611/normal_601bd6466f305.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505326/normal_5fc8f8d442186.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/tikusekabod.pdfIn PDF document text
    • http://sexugaweguko.iblogger.org/kinafu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kifowusaw.epizy.com/24711207350.pdfIn PDF document text
    • http://nekaxikafixof.epizy.com/32014614475.pdfIn PDF document text
    • http://ruzovufu.epizy.com/segiwupa.pdfIn PDF document text
    • http://nimunofat.epizy.com/afrikaner_culture_information.pdfIn PDF document text
    • http://bobipufenegapu.rf.gd/guess_the_song_answers_level_135.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE91 5216 bytes
SHA-256: 49050319ded5502392ef02e88ccd59861166e8614816bf7895929b0d01cb9126
font_01_sfnt_off00010034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10034 10420 bytes
SHA-256: a9397604b802116eba72b37194191013e5b792541e1f3caf73691eee165ed548
font_02_sfnt_off000123df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123DF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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