Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe08db624ae55bd…

MALICIOUS

PDF

78.0 KB Created: 2021-03-01 03:04:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 87e81f1591287c4409518c18727bb75c SHA-1: 911a576634ea423aa0d5214138932c50becc8caa SHA-256: 0fe08db624ae55bdbd260091a6d2a7f8b0fda04cf645be2bea0e8e422b1b8cd7
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate maliciousness. The document body, though heavily obfuscated, appears to be a lure for movie downloads, which is a common tactic for distributing malware or leading users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://mezovuduw.ru/aws?utm_term=romeo+%252B+juliet+1996+full+movie+download+in+hindi+720p PDF link annotation
    • http://reduslim-italiaofficial.site/94547597611h0kbd.pdfIn PDF document text
    • https://pemifapizu.weebly.com/uploads/1/3/0/7/130776061/9132394.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/eBT3Dgd/delicious_cookie_recipes_no_chocolate_chips.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/how_to_write_an_outline_for_a_novel.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/6njhakk/vujubudigezasofali.pdfIn PDF document text
    • http://avbox.org/doorking_1837_user_manualiqy8z.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/b3id5gc/that_s_you_meaning_in_malayalam.pdfIn PDF document text
    • http://fabulouss.space/caballo_viejo_partituraw1zcc.pdfIn PDF document text
    • http://tehnotop.space/podeweluzajuzukovosw45tq.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/jihCicy/new_york_city_fc_vs_tigres_tickets.pdfIn PDF document text
    • http://bridgecommerce.com/56988160718ulux9.pdfIn PDF document text
    • https://cdn.sqhk.co/tejikeluz/HSUgdjj/photo_mixer_online_editor.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://labazuneg.epizy.com/metibemedejuxijobitob.pdfIn PDF document text
    • http://fiduritunibo.epizy.com/majora_s_mask_3d_strategy_guide.pdfIn PDF document text
    • http://dajajubofu.rf.gd/65027300290.pdfIn PDF document text
    • http://fejivexol.epizy.com/gitunemetatifejezigu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE364 5840 bytes
SHA-256: 2f0aea2c870e9513d43249b4c5264e4abd3141140c739f926fcef574b8c3b2ba
font_01_sfnt_off0000f74a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF74A 11264 bytes
SHA-256: 2f09abebad414a6ba78680170e857c2fe0c3401527c5f3077bba20888b2f1d95
font_02_sfnt_off00011c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C86 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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