Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a3fab3759197af0…

MALICIOUS

PDF

69.3 KB Created: 2021-03-19 04:15:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d971a6f20e258e786e4b1b7c95998841 SHA-1: 116d9432bc6fb0edc2cccc7309da65e0a29c02a9 SHA-256: 8a3fab3759197af029b523f7bebfa8e11a1448505494f833c4020383d1e3114a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9993

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://pelibifir.ru/strik?utm_term=wahl+5+star+cordless+magic+clip+clipper+uk PDF link annotation
    • http://kubosikavudux.mygamesonline.org/what_is_a_drivers_license_document_number.pdfIn PDF document text
    • http://xifadezuzurap.medianewsonline.com/balladen_klasse_7_gymnasium_klassenarbeit.pdfIn PDF document text
    • http://afracheat3.xyz/mekasaluzetjr28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428083/normal_604b885e7b1c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413587/normal_5fea04fb1ec3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481282/normal_603eef94d1239.pdfIn PDF document text
    • http://gapilojazixo.getenjoyment.net/which_is_the_best_free_video_editor_for_pc.pdfIn PDF document text
    • http://copyrightnotice-ig.com/hey_look_at_me_meme_templatebmziq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446045/normal_5fc96d3cdf3c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417535/normal_6036f1ed6a1a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477892/normal_60465e31e9227.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462345/normal_5fffb95dd5e49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415769/normal_602196ef4676a.pdfIn PDF document text
    • http://lunagogafoxoj.sportsontheweb.net/76868112445.pdfIn PDF document text
    • http://mujoxoluvisukid.getenjoyment.net/thermo_king_reefer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479932/normal_5ff4069a677d9.pdfIn PDF document text
    • http://alphabitx.com/84039137588vpb7o.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rodedewezijore.atwebpages.com/log_base_10_ti_89_titanium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8933613d-c919-4731-b63b-6b620471dd2c/38482289206.pdfIn PDF document text
    • http://wozimape.onlinewebshop.net/borg_rpe_scale_1_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f0f528f-c664-420a-a039-d55e48919266/wesigubidilalu.pdfIn PDF document text
    • http://sajulugebimisu.myartsonline.com/whats_the_most_unforgivable_sin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b804928f-405f-4514-8514-e24b9257aa2d/lefoxilafemolaxitikugi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB2 5688 bytes
SHA-256: 5d9afd8c4ea531316523c2569ce5b8dc5574a21ea1f802210dd94643bfc531cd
font_01_sfnt_off0000e1f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F0 10984 bytes
SHA-256: ff46f3feb392539c9253782ebbe914e6b4c20b4e6b271de2ae3b7bc7720ea44f

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