Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc32005089944aa2…

MALICIOUS

PDF

99.6 KB Created: 2021-04-20 13:25:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5059ca913f139845ea70ebf2fab290fa SHA-1: 695fb0da24ac2089e87a15f5fffb9e6c3836ccf6 SHA-256: cc32005089944aa26de3a253147721004f6957b8e05606cb8ab3fe1c3f2e129a
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document exhibits characteristics of a phishing or SEO spam campaign, as indicated by the high number of external links, many pointing to disposable hosting. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of an attempt to lure users to malicious websites, potentially as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://fokemale.ru/strik?utm_term=sole+e25+elliptical+best+buy PDF link annotation
    • http://zenajok.medianewsonline.com/4879286377.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/djgmjg1/63092507042.pdfIn PDF document text
    • https://cdn.sqhk.co/mopofosak/Hiahaid/nudamunurelemuzerokofef.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/ElxGvha/sowamurezulosakudi.pdfIn PDF document text
    • https://cdn.sqhk.co/kijowevo/PhdtAcB/thiwanka_dilshan_ekamath_eka_dawasaka.pdfIn PDF document text
    • https://cdn.sqhk.co/felegabiw/9L5hcgi/79603163415.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://436240a4-ef10-404e-ad90-c5cab949c7af.filesusr.com/ugd/3fb742_69e5b22954684dd184087a3855ab291d.pdf?index=trueIn PDF document text
    • https://b416d2a3-330e-4518-8f5e-c931256b4cd1.filesusr.com/ugd/5168b2_05f570e9ba4540bc8aeb416eb5ef7267.pdf?index=trueIn PDF document text
    • https://e06e8306-d71e-4c92-aa1b-e8c52eeb44cb.filesusr.com/ugd/bc4951_d44973c9e148436fb6bea8f4b037e516.pdf?index=trueIn PDF document text
    • http://gefuwaw.atwebpages.com/xegexivakaforeloron.pdfIn PDF document text
    • https://cd753cf5-d90a-4073-9c55-931a76e81761.filesusr.com/ugd/8826df_ea25a64fc42544edbde063305a3fae61.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e24270eb-4aef-4dbe-a8fa-957ebea3583c/migavewez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff877cb1-beb3-47a0-8622-ff2a02b6c13f/zozikimigodunipa.pdfIn PDF document text
    • https://e5447efa-8854-4d04-834e-f0bbd7438c8b.filesusr.com/ugd/ac612b_801494c6ca7d4193912e33e363debe21.pdf?index=trueIn PDF document text
    • https://d5cf7a15-73c9-49c9-ad57-d4f0303abb0c.filesusr.com/ugd/0d002d_4734b2e9b32f4513b096ac3ad18c9f86.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vukusa/xejezalafakig.pdfIn PDF document text
    • https://8b2103c5-345b-48fd-98e3-f19c90c4efd0.filesusr.com/ugd/0e2875_36c11931d90e4955981b2781f13da51f.pdf?index=trueIn PDF document text
    • http://sudexixurijaxoz.atwebpages.com/applied_linguistics_guy_cook_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ff96047-dbb0-4062-ba45-d7206abcd0ab/56495228782.pdfIn PDF document text
    • https://f11c4bf2-12a6-49f8-9590-07a94b689168.filesusr.com/ugd/11276f_e716c2cf6cb04bfeb6b77e1bb8e0ccff.pdf?index=trueIn PDF document text
    • https://a80c0318-1640-4d50-a016-df037fc402b9.filesusr.com/ugd/895bef_072de0b701b14039810fb29647ea5306.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/download_warcraft_2_battle.net_edition_full_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01a2d41d-b167-4bae-aeb5-4b7ca6d65e5f/kejivot.pdfIn PDF document text
    • https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_d5adfe1965e74138861a51a1400c2694.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/264b569c-ac0f-42bd-ac01-678fcad4fda8/miwukeze.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00012f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F5B 5432 bytes
SHA-256: 551695b278a159d6d34aa6a8ce9ae3c0bf0e6970bc3714038cb84d2b51f83902
font_01_sfnt_off000141e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141E7 12068 bytes
SHA-256: 7e19fb5ac672bcaf32c85f6fa0803ecc74242f7612260accfe7125cadd60ae4d
font_02_sfnt_off00016b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B38 16168 bytes
SHA-256: 8c1e3298cb301b6aa2c2aeff0a89e1cafee6626e56d5ffa98ad52a7598c40df9

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