Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b27ea7aa5fe998…

MALICIOUS

PDF

90.9 KB Created: 2021-03-15 04:54:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: b931cd42c3d4d7ba6cd321955945b953 SHA-1: e24922401232d9a0ae3706b93a963910279b792d SHA-256: 36b27ea7aa5fe99881c3f5851eede29cdd55e0c1eb065466b0b4f5861435be16
126 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document is designed to host numerous links on disposable domains, pointing towards a phishing or malware distribution scheme. The embedded URL 'https://fokemale.ru/123?utm_term=flower+images+hd+1080p' is likely the primary lure, disguised as image content.

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://fokemale.ru/123?utm_term=flower+images+hd+1080p PDF link annotation
    • https://kutawujotin.weebly.com/uploads/1/3/4/0/134016956/bugiduxuwujok.pdfIn PDF document text
    • https://paxuxitusokewu.weebly.com/uploads/1/3/1/3/131380341/fenafigujiw.pdfIn PDF document text
    • https://regezubigif.weebly.com/uploads/1/3/5/3/135320660/2292557.pdfIn PDF document text
    • http://talakam.space/dead_cells_mod_apkzc6yp.pdfIn PDF document text
    • https://cdn.sqhk.co/nanagajog/jjfBOZL/monster_battle_royale_sneak_attack_squad_vs_halloween.pdfIn PDF document text
    • http://reduslimitaly-official.site/frozen_script_broadwayso85g.pdfIn PDF document text
    • https://widijozitumude.weebly.com/uploads/1/3/4/6/134688085/vivinomupug_livako_gametiworoniso_tidilapaguxewe.pdfIn PDF document text
    • https://cdn.sqhk.co/lesebonun/fieEibB/27635536871.pdfIn PDF document text
    • https://cdn.sqhk.co/givikufat/tjahhhh/launch_trampoline_park_application_columbus_ga.pdfIn PDF document text
    • http://ladirojenovezoj.mygamesonline.org/12a_cartridge_refilling_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/jiouieY/strawberry_shortcake_puppy_palace_full_apk.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/monobekiwoto.pdfIn PDF document text
    • http://nebo-baikala.ru/pebinasulatikavefig9fzb.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/gfhhi3c/zombie_slicer_card_coin_master.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486765/normal_5fe911876e2b7.pdfIn PDF document text
    • https://gizaluta.weebly.com/uploads/1/3/5/3/135345368/zinilogugiwat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369763/normal_60228587ec113.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vakogez.myartsonline.com/sotikidetomowol.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/83712965300.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/awadhesh_premi_all_song_dj_remix.pdfIn PDF document text
    • http://vegubom.atwebpages.com/kegolesiximo.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/jomelitopaditutiguwosoxa.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000125e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125E0 5808 bytes
SHA-256: 43d05e8b02e4820f205203da5353deb6a0fe599363670e620cfc7f55a2f0064c
font_01_sfnt_off00013990.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13990 11920 bytes
SHA-256: b730291e7dd16c121f836a56cf83bcf0f06915e7c3c12f952ef1822ada2389ee

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