Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a9d89fa9da597c6…

MALICIOUS

PDF

76.5 KB Created: 2021-03-18 01:54:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f60bb7b419c4c562a60514eb8516705c SHA-1: 9c20676256627da3fa6405b0c0c9501dd64e4b6e SHA-256: 7a9d89fa9da597c6be86479e3681343f961f7974cf99985300fae2d5d9f6ae29
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 0.9991

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://golowaki.ru/strik?utm_term=what+do+break+night+mean PDF link annotation
    • https://cdn.sqhk.co/nipigagavadu/bNy3ijY/edjing_mix_free_music_dj_app_apk.pdfIn PDF document text
    • http://nesobaka9.xyz/how_old_is_klaus_baudelaire_nowdn97h.pdfIn PDF document text
    • http://otshelnik.net/xebudigeqrrr3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423166/normal_60061c9dbc791.pdfIn PDF document text
    • https://vamemaxodoj.weebly.com/uploads/1/3/1/4/131437173/a359a097c21c19.pdfIn PDF document text
    • https://vezulapas.weebly.com/uploads/1/3/0/9/130969209/3847149.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/shaZRlD/golden_casino_free_slot_machines_casino_games.pdfIn PDF document text
    • http://kipokefurur.mygamesonline.org/85214453530.pdfIn PDF document text
    • https://xupodidif.weebly.com/uploads/1/3/0/7/130739682/8252130.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/gVBjfjf/does_crunchyroll_have_naruto_shippuden_dubbed.pdfIn PDF document text
    • https://mewurotimopu.weebly.com/uploads/1/3/1/3/131381658/sufigogel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447097/normal_602436c64f6ae.pdfIn PDF document text
    • https://dexixafavako.weebly.com/uploads/1/3/4/3/134348567/jinajo.pdfIn PDF document text
    • http://daravto18.ru/16429059541zska5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501632/normal_600ee36d5587d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459027/normal_600c98b9b85e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387938/normal_602163f8aed69.pdfIn PDF document text
    • http://sellamorem.com/panabeycayb.pdfIn PDF document text
    • https://vilinumatilaji.weebly.com/uploads/1/3/2/7/132740241/fuxufezonuwa.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/70550704706.pdfIn PDF document text
    • https://mafukizagodixep.weebly.com/uploads/1/3/4/5/134525221/38fa2e143367.pdfIn PDF document text
    • https://cdn.sqhk.co/tinukomafiro/cnHejib/racing_limits_mod_apk_1._1._0.pdfIn PDF document text
    • https://cdn.sqhk.co/nedivixozu/jgSj9J3/monster_energy_supercross_game_3_gameplay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xomutojekes.myartsonline.com/anatomy_and_physiology_bones.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_off0000ecfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFC 5248 bytes
SHA-256: 16f40bcbc65ffefeb2c5e16288226ed60e44ebab8668c8a7c0def73042a96c06
font_01_sfnt_off0000feb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEB5 11492 bytes
SHA-256: 959944824e9b1e633443a4f7371051ebcf3fd41908aead3e87e5ab5006df98d7

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