Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6e2f92cf9e3717b…

MALICIOUS

PDF

84.6 KB Created: 2021-06-04 02:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ba884136d7499c454d1265f55a5d6685 SHA-1: decae468bc52a83fba561c48dfc752fd2b66e671 SHA-256: b6e2f92cf9e3717b888d807a205555b1c1278ed3bce43f14b7ae7738915932ec
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 0.9997

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://archism.ru/pbw?utm_term=kiss+me+2011+full+movie+watch+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4471682/normal_60329460285ce.pdfIn PDF document text
    • https://xutogimumunode.weebly.com/uploads/1/3/4/3/134375265/xoweroju.pdfIn PDF document text
    • https://gamalisixidu.weebly.com/uploads/1/3/5/9/135958628/sixepiralag_biwofiwivoxore_lazisivabojiba_gezusakamufaxel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459470/normal_600800fe9f74b.pdfIn PDF document text
    • https://kikosubulu.weebly.com/uploads/1/3/4/8/134884397/magetolekigug_zojivigududiw_diturutaz.pdfIn PDF document text
    • https://tasikedojawepu.weebly.com/uploads/1/3/4/4/134473564/nunedinewali.pdfIn PDF document text
    • https://wefakibulebu.weebly.com/uploads/1/3/1/4/131408371/detimiverugez.pdfIn PDF document text
    • https://jipaxebuperiw.weebly.com/uploads/1/3/4/7/134751602/7607103.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
    • http://mumubib.pbworks.com/w/file/fetch/144413712/active_and_passive_voice_exercises_for_ssc.pdfIn PDF document text
    • http://tebejeloxid.pbworks.com/w/file/fetch/144424191/how_to_emcee_a_7th_birthday_party.pdfIn PDF document text
    • http://tisowowuduwe.pbworks.com/w/file/fetch/144557787/revue_technique_citron_c3_1.4_hdi_filetype.pdfIn PDF document text
    • http://puzavofan.pbworks.com/w/file/fetch/144581685/rajizom.pdfIn PDF document text
    • http://pobonagul.pbworks.com/f/silk_road_dbq_answer_key.pdfIn PDF document text
    • http://zekodunu.pbworks.com/f/78156845008.pdfIn PDF document text
    • http://xutosop.pbworks.com/f/hibbeler_mechanics_of_materials_10th.pdfIn PDF document text
    • http://finatin.pbworks.com/w/file/fetch/144568917/8344634049.pdfIn PDF document text
    • http://nonesupul.pbworks.com/f/kobiraz.pdfIn PDF document text
    • http://barumena.pbworks.com/f/24956552816.pdfIn PDF document text
    • http://rugewenuzed.pbworks.com/f/codes_action_replay_pokemon_noir_2_rare_candy.pdfIn PDF document text
    • http://nigezid.pbworks.com/w/file/fetch/144423516/ammo_49_dl_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF55 5352 bytes
SHA-256: 2d0b3d48a63cc0e78098e488b81a43ef08706e59b4a9fbafd99ee1d07864a59b
font_01_sfnt_off00011183.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11183 11136 bytes
SHA-256: 30ed4c151973ca5ad97dc3099148c7c3157e34096f5bdecc25d92c047cf297e6
font_02_sfnt_off0001372e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1372E 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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