Malicious PDF — malware analysis report

Static analysis result for SHA-256 2280732eea0080ae…

MALICIOUS

PDF

76.8 KB Created: 2021-05-13 05:41:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 54ad5af246b13d71606126d8800f9be2 SHA-1: 9faca3411452f51a46bbd65b2dadd5f5cfde5794 SHA-256: 2280732eea0080ae8882fa65558b596e427bbc1a32af86710f92538293ae2f8b
186 Risk Score

Malware Insights

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

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 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://botokaw.ru/strik?utm_term=best+board+game+deals+uk PDF link annotation
    • https://mobunotenu.weebly.com/uploads/1/3/4/4/134403581/8f05d.pdfIn PDF document text
    • https://betepojikimiji.weebly.com/uploads/1/3/0/8/130874485/gaxorokodikufexiti.pdfIn PDF document text
    • https://bumiwawewa.weebly.com/uploads/1/3/5/3/135343946/zelinewonesikavo.pdfIn PDF document text
    • http://thehensleys.org/how_to_find_magnitude_of_vector_additionwv6hn.pdfIn PDF document text
    • https://cdn.sqhk.co/tefazaturar/SjegjAE/79343327339.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/iSicic4/lost_island_waterpark_waterloo_iowa_mermaid.pdfIn PDF document text
    • https://berebexamoleti.weebly.com/uploads/1/3/1/3/131384136/9599995.pdfIn PDF document text
    • https://cdn.sqhk.co/sugezigo/iihOAIl/12358521252.pdfIn PDF document text
    • https://nolipugi.weebly.com/uploads/1/3/4/6/134652161/mudunifazaxepepebim.pdfIn PDF document text
    • https://ruxakadun.weebly.com/uploads/1/3/0/7/130739963/5850899.pdfIn PDF document text
    • https://cdn.sqhk.co/vusunuvaka/jja6rgc/anxious_for_nothing_study_guide_with_dvd.pdfIn PDF document text
    • https://dawupewutusod.weebly.com/uploads/1/3/4/8/134879821/1212611.pdfIn PDF document text
    • http://mavpa.fun/calculus_early_transcendentals_4th_edition_rogawski_downloadg9asi.pdfIn PDF document text
    • https://dubakaxejevam.weebly.com/uploads/1/3/2/6/132696109/dekadi_zizolawirebugu.pdfIn PDF document text
    • http://santand-es.com/beats_solo_2_wired_headphones_warranty4ctb4.pdfIn PDF document text
    • https://cdn.sqhk.co/rexukewanej/ezjdU83/bike_racing_3d_online_play_free.pdfIn PDF document text
    • https://sebexuvifezurob.weebly.com/uploads/1/3/4/8/134881690/9083e8306a57d.pdfIn PDF document text
    • https://cdn.sqhk.co/kobewudojuvo/gdN83jg/81436111251.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxawexa/ijgw8jf/fopibilanariwefa.pdfIn PDF document text
    • https://cdn.sqhk.co/mivoteloxip/gggsXTJ/12010043432.pdfIn PDF document text
    • https://cdn.sqhk.co/zafilivopupu/j0SridA/puzowuxenezoxotipatevo.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/86744623466yyvcw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wupatime.epizy.com/dawadakosaluvazejural.pdfIn PDF document text
    • http://sogigadataga.epizy.com/33632440274.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_off0000f006.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF006 5396 bytes
SHA-256: 7876ce21aa613e0075dbe7aee5870c3d8b3392395379805bfdae9f8821c765b5
font_01_sfnt_off0001024a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024A 10256 bytes
SHA-256: 3a6fc451f03bc3226e6dbdf44bb7e21282505487fc6f0d72a059f505a9d3460b

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