Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d6d6477ef7b29f7…

MALICIOUS

PDF

118.6 KB Created: 2021-02-26 18:20:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1a2a749ff26250add3e865e2620e6823 SHA-1: 9263446700b0fade01ab84da06faf9da4d116b15 SHA-256: 3d6d6477ef7b29f7b1221533c7e57fdc1a7c18849a5853a2d575c45f2730bc17
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains and potentially malicious content, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. The ClamAV detection further confirms its malicious nature. The embedded URLs suggest an attempt to redirect users to phishing sites or download further malware, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/award?keyword=world+political+map+outline+black+and+white PDF link annotation
    • http://fanisore.sportsontheweb.net/52015899908.pdfIn PDF document text
    • https://rujuzodojavumip.weebly.com/uploads/1/3/4/7/134726220/2423836.pdfIn PDF document text
    • http://on-arenas.com/basn_ve_rzgarlar_slaytanxa7.pdfIn PDF document text
    • http://zeboxagekej.sportsontheweb.net/geralds_game_ending_explained_moonlight_man.pdfIn PDF document text
    • http://1xbet-sportstavki.fun/rdr2_side_quests_chapter_6ok63q.pdfIn PDF document text
    • http://normal-id.com/appium_java_client_jar_6._1._0k4av0.pdfIn PDF document text
    • http://health2health.online/ag3_mods_pack4aqxn.pdfIn PDF document text
    • http://luminar3-download.xyz/69349926963f783d.pdfIn PDF document text
    • http://esclub.pro/weed_farmer_game_onlinetf2uv.pdfIn PDF document text
    • http://silvanozito.online/macbeth_summary_act_3_scene_2y0rjt.pdfIn PDF document text
    • https://kaxitojuwomig.weebly.com/uploads/1/3/5/3/135302818/7267675.pdfIn PDF document text
    • https://divewamekavese.weebly.com/uploads/1/3/1/8/131860060/pibukozaveg-xafakelosavo-lutevojavunofi-takakoxafiji.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/mevuvude.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391649/normal_5ff4b5dc62f43.pdfIn PDF document text
    • http://lestyprin.online/international_business_news_canada24zhz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tenunud/rerom.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/yamaha_ls9-32_specs.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_off000197aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197AA 5444 bytes
SHA-256: c016a479cad6ba467925ddc7bf449d05a43200e79a0418b9f0c080e743ad4120
font_01_sfnt_off0001aa14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA14 10136 bytes
SHA-256: de2c099c37142d0c34506dfb375fc0907df6c1a58c9f4807d1c4824273469ffc

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