Malicious PDF — malware analysis report

Static analysis result for SHA-256 027e22273915ff57…

MALICIOUS

PDF

74.5 KB Created: 2021-05-24 22:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f0e5eb529718efbf625a187fa461195 SHA-1: 63d75954e1da776ac826baafbc4b2d624cdb7b8d SHA-256: 027e22273915ff576e7e658f01f64643b5c4611361ce6c4d43f0524b0f986f3b
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded external links, with several pointing to suspicious domains and identified as part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=cuisinart%20burr%20grind%20and%20brew
    • https://lavolobaned.weebly.com/uploads/1/3/0/7/130740571/napirinanilabovazugu.pdf
    • https://kowupozot.weebly.com/uploads/1/3/4/8/134887449/6156038.pdf
    • https://lonapumerupa.weebly.com/uploads/1/3/4/8/134853684/5823143.pdf
    • https://wijirejilape.weebly.com/uploads/1/3/2/8/132816202/2de337230a.pdf
    • https://mifadugusukar.weebly.com/uploads/1/3/5/3/135337027/pemupozakupukur_nowebosupomix_joler.pdf
    • https://bukalejobiwasek.weebly.com/uploads/1/3/1/4/131409200/986bc.pdf
    • https://mokazeke.weebly.com/uploads/1/3/1/3/131384082/8479603.pdf
    • https://xurugafidas.weebly.com/uploads/1/3/6/0/136081795/5947488.pdf
    • https://nabusaguvelono.weebly.com/uploads/1/3/4/0/134095838/lasirinovejut_wefumetinumuto_xujux_lonegukuj.pdf
    • https://samojosaletope.weebly.com/uploads/1/3/4/0/134017273/lepirajufutejun.pdf
    • https://xovewelokajefi.weebly.com/uploads/1/3/4/8/134864882/zetufagijili_balaxolumiju_watipuvoban.pdf
    • https://fujifarilopo.weebly.com/uploads/1/3/4/4/134483008/putife-jugiveri.pdf
    • https://tazusovekofuwaj.weebly.com/uploads/1/3/5/9/135969448/9cc9f.pdf
    • https://tuzunogosur.weebly.com/uploads/1/3/0/8/130815213/pobavodujuj_kiruvas.pdf
    • https://voduvavib.weebly.com/uploads/1/3/4/0/134096125/sibebuporividugaj.pdf
    • https://modurofeg.weebly.com/uploads/1/3/4/3/134376635/863449.pdf
    • https://zebaraxofalolal.weebly.com/uploads/1/3/0/8/130813897/4d2d94bce59e.pdf
    • https://sirowatogiwu.weebly.com/uploads/1/3/2/8/132814809/paziwosiva.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/potofaw/chauffeur_license_questions_and_answers.pdf
    • https://s3.amazonaws.com/mexesazaxasa/what_is_the_best_dishwasher_detergent_for_a_bosch.pdf
    • https://s3.amazonaws.com/miledu/95413388690.pdf
    • https://s3.amazonaws.com/genedonapubefe/82904570817.pdf
    • https://s3.amazonaws.com/bovenotojitowe/cache_memory_mapping.pdf
    • https://s3.amazonaws.com/bulolimepol/povutipurodiwimalabafop.pdf
    • https://s3.amazonaws.com/vuxirefare/42260636491.pdf
    • https://s3.amazonaws.com/megujobemegor/troy_bilt_super_tomahawk_chipper_shredder_drive_belt.pdf
    • https://s3.amazonaws.com/zufaxepixiguxax/xadam.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6cb.bin
6c1b27b2b74d98086c0cf8693fdf9b08b7bd4bca8ee6e96406619ff60febf941		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6CB 5100 bytes
font_01_sfnt_off0000f83a.bin
a4cd8015a4ce8820eb13265cc917d0c36cc8a9e2d38199ffe436d2623d1d6918		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF83A 10488 bytes

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