Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eedcc1e047f9afc…

MALICIOUS

PDF

75.0 KB Created: 2021-03-24 04:11:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a1699520f36f44c707a042ae2aec4b1b SHA-1: 12e3507118076afc96e11890d75ac141658eb35a SHA-256: 3eedcc1e047f9afc067f846efaea25363139a7fcb40e9fd1603f3c224215ace6
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 0.9998

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://seumenha.ru/wix?keyword=partial+differential+equation+calculator+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366949/normal_6010771c43a54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461498/normal_5ff22fea79260.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445331/normal_5fddd8d88568e.pdfIn PDF document text
    • http://help-business-media.com/pesokukejitamozhajj.pdfIn PDF document text
    • http://kogudajinisu.iblogger.org/nespresso_machine_not_working_red_light.pdfIn PDF document text
    • http://metalllift.ru/do_you_put_cooking_oil_in_an_air_fryerqse10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414869/normal_604d3fcf523bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427820/normal_5ff01e3ca463c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465133/normal_60387f6f1da77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_6053193a638a4.pdfIn PDF document text
    • http://sazasebum.iblogger.org/ncees_fe_exam_reference_manual.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/594cde35-7019-4786-8547-df3b9fca7641/toro_power_clear_721_qze_wont_start.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eff5809-cba3-467f-8a51-b78c354be26f/lekuduxafikigadovadek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b739e996-9c4c-4f47-a934-61f05826c64e/mcdonalds_franchise_operations_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/349a4657-d4b4-4523-b9f1-de8b91ad4729/wahl_clipper_oil_poisonous.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4ddf5ce-d015-4765-87fb-be699d44f2c1/how_to_lose_weight_fast_in_2_weeks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc69e5d4-e9fd-4edd-897b-7ad3c9700d6d/homelite_super_2_chainsaw_parts_diagram.pdfIn PDF document text
    • http://kolenexe.epizy.com/hadoop_installation_guide_linux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aef48d01-9f34-44f2-a6e1-2d9b6aa1332e/fixafamagagosa.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_off0000e879.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE879 4964 bytes
SHA-256: 5d4e8789f36f946f6dc70bec8c267bf968651e8aa75fcb230dc976923d25db0b
font_01_sfnt_off0000f965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF965 10888 bytes
SHA-256: 0a1a97bddc461ce137908b150f4aba85a0661312501946776d6ca1ee8ef1394f

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