Malicious PDF — malware analysis report

Static analysis result for SHA-256 10b9dba60a1d9428…

MALICIOUS

PDF

70.8 KB Created: 2020-12-08 19:59:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6e704efed53233af3f45775e4940d25f SHA-1: 2d34f5e419d21241a43ac3076df52ccf7816330c SHA-256: 10b9dba60a1d94288aa4be6651ede6083e76897a0176831ad999c373a7bf4b47
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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://traffmen.ru/strik?utm_term=buckminster+fuller+quotes+system In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4e25eeb-a2d2-417c-8828-030ae64f100c/cells_concept_map_answer_key.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ebfc418d7934ac73dcfc/t/5fcc53557ae85b53b28745b6/1607226203224/marvel_comics_1001_variant_covers.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/hades_star_weapon_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/prayer_to_saint_philomena.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/kimalotakunu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7fbe9fc3622d5227cd2/t/5fc56cfd9d79364840450e5d/1606774015476/mp3_music_converter_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/decolonizing_methodologies_research_and_indigenous_peoples_linda_tuhiwai_smith.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/hard_palate_bones_form.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdeebcf3de5e49b5291f3a/1606282941182/1832517072.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/bopepusipiwifegotojoseda.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/vnedu_teacher_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf59c63c6ccf69f355a359/1606375880435/amelia_bedelia_books_online_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4ec13c02f22b9d03bca7/1606373058949/indian_peace_commission_significance.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/mera_bhola_hai_bhandari_song_pagalworld.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf681c3c6ccf69f356b0f4/1606379551656/7708717062.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_off0000d6f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F0 5156 bytes
SHA-256: 9a2ba5e9a060071380dae1d3ea39856add6e345ec54e28ec2b0b57ae29995534
font_01_sfnt_off0000e87f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87F 11000 bytes
SHA-256: a40f53b91f852b32a429cc7a9998556055229ce95c512b8d1835728a5e7da559