Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8324a5493b481ee…

MALICIOUS

PDF

83.8 KB Created: 2021-03-24 22:20:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fa2dc9d95876fb94121726a08e2b85d7 SHA-1: 83a41c70ed67fc6972c4f0b5441a4447530ff1b3 SHA-256: e8324a5493b481ee99a26ad59f41b9e1536dd1c603320afa0a618457e4b771a9
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://dugedepap.ru/strik?utm_term=elgato+hd60s+setup+xbox+series+x PDF link annotation
    • http://ruwemipuwev.mypressonline.com/quran_arabic_english_transliteration.pdfIn PDF document text
    • http://peteferix.mypressonline.com/does_ahsoka_return_in_rebels.pdfIn PDF document text
    • http://scoretdho.best/que_es_comunicacion_corporativa_segun_autorest3v3g.pdfIn PDF document text
    • http://mushygushysayings.com/27101798937mc57h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468289/normal_5ff21c2c7d769.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451049/normal_5ffe26f0a9d36.pdfIn PDF document text
    • http://merishwheelrecords.com/ponexubupatemipajo7fctq.pdfIn PDF document text
    • http://supijijuzumapiz.iblogger.org/madosaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451365/normal_60210b8f573da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393925/normal_5fd63334db7da.pdfIn PDF document text
    • http://levantemosaic.com/nikarepafabodonexunakif24ns3.pdfIn PDF document text
    • http://rewita.fun/majajawarunigojazo4jn04.pdfIn PDF document text
    • http://wonizojaru.scienceontheweb.net/cargadores_solares_para_celular.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385026/normal_5ff0ccf2169bd.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
    • https://s3.amazonaws.com/jigezilor/2008_jeep_grand_cherokee_for_sale_ontario.pdfIn PDF document text
    • http://pugagewuda.rf.gd/19757214554.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/57815052333.pdfIn PDF document text
    • https://377d1c6c-8747-407e-9a0d-bb8234813250.filesusr.com/ugd/f0b1fd_6fc222b4314e49dcbeb68b5652dd55e0.pdf?index=trueIn PDF document text
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_23e446cb49094b83a6d8060c11b8cb5b.pdf?index=trueIn PDF document text
    • https://0d555108-1732-4721-8d72-76d747b2053a.filesusr.com/ugd/1b0481_2f7ae24b037a44098f9845d5a68027b2.pdf?index=trueIn PDF document text
    • http://pivimufe.atwebpages.com/jomilojowesofaxijiril.pdfIn PDF document text
    • http://vubixijugisoloz.epizy.com/34741147620.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/best_books_for_gmat_preparation_2021.pdfIn PDF document text
    • https://43e59f28-96d7-4988-bcd6-55bc25f76e69.filesusr.com/ugd/372bdc_11046679320a45d9a6b0d8fdb64bc033.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wetevali/best_premier_protein_shake_flavors.pdfIn PDF document text
    • https://51da6a7d-ee05-4a49-87ee-1b74af3aeb07.filesusr.com/ugd/b80405_0f370e0f00f24a61b3f3f8da6ec89567.pdf?index=trueIn 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_off0000f93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93C 5460 bytes
SHA-256: be18f98944335942792de7b1230d10e0b8388b93d4e1e2468cde8644e9760d94
font_01_sfnt_off00010bd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BD9 11600 bytes
SHA-256: 819633902a7e8b7b64d95564835c7b38fb9a910e95d9bb6a65a641e000784c55
font_02_sfnt_off00013360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13360 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3