Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dae123c795698c4…

MALICIOUS

PDF

72.1 KB Created: 2021-02-25 17:54:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 7613e75a53ea87b0c5c1d61e74d1e76a SHA-1: 2fcff2bdd87ef16ed3f654e1e9b00f445300a814 SHA-256: 6dae123c795698c4bcfb9ff4741f9646217abccc3bdd3cca6b4d273ac82768df
246 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The 'SE_BRAND_CREDENTIAL_PHISH' heuristic specifically points to an Apple impersonation lure with a link to a redirector. The document also contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://jotinebemoti.weebly.com/uploads/1/3/4/6/134681432/pisajazomobaledewa.pdf.
  • 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://bologen.ru/strik?utm_term=applied+calculus+by+hughes-hallett+et+al.+wiley+6th+edition+2018 PDF link annotation
    • https://jotinebemoti.weebly.com/uploads/1/3/4/6/134681432/pisajazomobaledewa.pdfIn PDF document text
    • https://cdn.sqhk.co/wimedizi/njdjfie/desupi.pdfIn PDF document text
    • https://cdn.sqhk.co/zewesifadeka/M0ih6Mu/2674596853.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/whirlpool_cabrio_5.3_washer_and_dryer_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/bulunazi/fmjjjji/21649494684.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/which_g_shock_watch_is_the_most_popular.pdfIn PDF document text
    • http://jedusajinud.mygamesonline.org/how_to_reset_brother_hl-2270dw.pdfIn PDF document text
    • https://cdn.sqhk.co/koroxofusino/2Ey8oyZ/weralimatepasa.pdfIn PDF document text
    • https://cdn.sqhk.co/paxepilekot/hihevgf/zowozomifufi.pdfIn PDF document text
    • https://bewebisiseten.weebly.com/uploads/1/3/0/8/130874130/5621358.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/work_hard_play_hard_song_pagalworld.pdfIn PDF document text
    • http://nowuzapifara.rf.gd/4698983658.pdfIn PDF document text
    • http://zotubune.myartsonline.com/89706090999.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/company_director_profile_format_in_word.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_off0000d93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93F 6300 bytes
SHA-256: 4f7120f51a62862312f789f5c74aaaff997f77e417ec1ef3da31db4657b09965
font_01_sfnt_off0000eec9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC9 10712 bytes
SHA-256: c1ba0fccdc0a6d9bee9fbe36d67af86865f4dbcfb33eb9db11d273531811ebb3

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