Malicious PDF — malware analysis report

Static analysis result for SHA-256 22d2aa67ca349700…

MALICIOUS

PDF

75.5 KB Created: 2021-03-19 19:14:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: d16f4ac03092afaf19fcb69e8ed21698 SHA-1: e88b602864a2d4d1277c8d7c2619812d6ad918d6 SHA-256: 22d2aa67ca3497007bfc32caca3f096bfc0b7a78e564adaa4e3c9521766a5224
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous external URIs pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially malicious content. The presence of embedded URLs and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/aws?utm_term=dnd+5e+warlock+invocations+tasha PDF link annotation
    • http://wamuwosola.mygamesonline.org/how_to_inform_manager_about_death_in_family.pdfIn PDF document text
    • http://hardcreditcheck.info/ferefapiaxq9q.pdfIn PDF document text
    • https://pujezifug.weebly.com/uploads/1/3/0/7/130738771/bejogajul-fupigetawudiwej-nofebu.pdfIn PDF document text
    • https://gefaturulabi.weebly.com/uploads/1/3/4/4/134487578/103c04c3.pdfIn PDF document text
    • http://niwizonoleror.mywebcommunity.org/free_weekly_safety_topics_construction.pdfIn PDF document text
    • https://cdn.sqhk.co/gatezoru/XVibSgj/medejoduvuwab.pdfIn PDF document text
    • http://suwefazimim.medianewsonline.com/siratiwupuwenidexefam.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/iiihbhg/world_war_2_fighter_plane_models.pdfIn PDF document text
    • https://cdn.sqhk.co/lomotutuwe/ibxggut/44742597199.pdfIn PDF document text
    • https://lazofakivew.weebly.com/uploads/1/3/1/4/131406449/6379148.pdfIn PDF document text
    • http://basvuruizleme.online/50_shades_freed_freea4noi.pdfIn PDF document text
    • https://marabobufazezi.weebly.com/uploads/1/3/5/9/135992859/9597848.pdfIn 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/fc5694b1-23a9-46c7-bd9b-64cf3f12b51d/my_monster_can_read.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/cathy_hughes_net_worth_2019.pdfIn PDF document text
    • http://vexolofifete.atwebpages.com/cauldrons_in_the_cosmos_nuclear_astrophysics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45fd63e9-c573-4ba5-9403-c328c8a41309/69576531393.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/liluxesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/770a0031-9dcc-458d-ab95-8257f904b675/how_to_improve_bjj_at_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fce8ef57-4334-4393-8bf4-7c2a9b2a77ed/what_does_annabel_lee_poem_mean.pdfIn PDF document text
    • http://gukutimaguvuzum.onlinewebshop.net/which_is_the_best_roku_to_buy.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_off0000e8e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E9 5364 bytes
SHA-256: b7f728e65f863f8701c6e2d63305fbbaad3f18ed757ba41ad03e346d10f1c42f
font_01_sfnt_off0000fb45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB45 10996 bytes
SHA-256: 04ee54eb62a44fa92338361e99cdd282da9109dc88afa1cfaac5c62ac5cfe0f8

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