Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ac6cd32043eed8…

MALICIOUS

PDF

73.7 KB Created: 2021-03-17 05:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 00d0f4b806ab3e295bd276b8784578c5 SHA-1: 94a000295a8e8b1e83580f5d93fa8bc9dd66f67d SHA-256: 32ac6cd32043eed87e8ce446815c03f320f567a176b6a89bd6929637fcc13598
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 0.9996

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://kuzutuzo.ru/123?utm_term=inference+worksheet+4+answers+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391634/normal_5ffc73163ee71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483856/normal_60368b084dcad.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/ajew3z1/follower_analyzer_for_instagram_pc.pdfIn PDF document text
    • http://meetsol.xyz/dds_discount_near_me_applicationobqu8.pdfIn PDF document text
    • https://cdn.sqhk.co/tezejikibus/6hjhjhg/online_general_knowledge_quizzes_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369316/normal_6013f34d5bece.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421783/normal_601d0063b7115.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489240/normal_603151654e6c0.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/earthquake_news_report_snl_scriptxmjur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vabepevid.epizy.com/scope_of_business_economics.pdfIn PDF document text
    • http://gowamatul.epizy.com/xofapef.pdfIn PDF document text
    • http://venumifulo.epizy.com/teri_akhiyan_ka_kajal_bhojpuri_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be84feda-070e-4cf5-ab3b-6840e70f47ce/90983705093.pdfIn PDF document text
    • http://fatesixinubumot.epizy.com/atropine_sulfate_davis.pdfIn PDF document text
    • http://gaxegumulot.rf.gd/32215616551.pdfIn PDF document text
    • http://tubitige.epizy.com/36629416518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ab45ea5-2bf2-459d-b6a2-6a53b23c3efd/41082286471.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73b4f148-1ef0-4204-b5dd-8a2caa85f051/48004547883.pdfIn PDF document text
    • http://jumazimedu.rf.gd/72899836828.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cd8e722-e52a-4d51-94bc-26819029aac5/90717772260.pdfIn PDF document text
    • http://kaxasasetepub.epizy.com/75215393361.pdfIn PDF document text
    • http://delifas.epizy.com/como_agua_para_chocolate_capitulo_1_resumen.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_off0000e4be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BE 5220 bytes
SHA-256: edb6d1e538be2881f4352532fe2f805ec13da23bb21bb375719212f3e4a1a8c6
font_01_sfnt_off0000f6a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A3 10348 bytes
SHA-256: d1d97eb2a98d0a871d96f93ca0971f34d42b06cd3d849f26cca10e694160eb6e

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