Malicious PDF — malware analysis report

Static analysis result for SHA-256 7da02f5c3ec2242e…

MALICIOUS

PDF

76.9 KB Created: 2021-06-09 07:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 11e4b9abe0ea84c3ee3d2b1242deec62 SHA-1: 983ad6e9a78bb5c4c857a9d48448ac396a3612f3 SHA-256: 7da02f5c3ec2242ebb24a9ec8bad0f3f8083591c18becb272367198c1121779a
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable hosting, and one specific URL is associated with a search term for a popular game's data. This suggests a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://allytemp.ru/pbw?utm_term=dream+league+2020+apk+obb+data PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4419851/normal_6000a3fc601a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392658/normal_60246bb1a2548.pdfIn PDF document text
    • https://fajuvupo.weebly.com/uploads/1/3/5/3/135310445/dorepejolatu-kikamavefiwa-baxokop-namewotexivu.pdfIn PDF document text
    • https://biruwilajefi.weebly.com/uploads/1/3/4/6/134651793/lirudufezolalod-zurulunuje-lumivu.pdfIn PDF document text
    • https://wobofosowipifir.weebly.com/uploads/1/3/0/7/130776138/6f64089a6de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404290/normal_5fd1d10d4a10c.pdfIn PDF document text
    • https://dewotime.weebly.com/uploads/1/3/1/6/131606762/jevogineka-toguwadajapit-pimetoladixenus.pdfIn PDF document text
    • https://weposatozexutav.weebly.com/uploads/1/3/4/3/134314203/rufitisatamegitanafi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424996/normal_5fcd525a77392.pdfIn PDF document text
    • https://mepurukog.weebly.com/uploads/1/3/5/3/135306658/598083.pdfIn PDF document text
    • https://lenudigibelap.weebly.com/uploads/1/3/7/4/137499492/donuxezokitod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384048/normal_604ab855bc164.pdfIn PDF document text
    • https://logudapixifoke.weebly.com/uploads/1/3/4/3/134371583/jogefagowab_desawatej_baxasenisosi_bofoson.pdfIn PDF document text
    • https://kurajefofukagi.weebly.com/uploads/1/3/4/8/134895289/nenukadekitoz_dodabarabe_daxaru_pakovate.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5de1c0b4-467c-41b8-a9af-07479b70ffa7/pentair_intellichlor_ic60_warranty.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd717c32-00d1-49ab-97c4-bb9424f39db4/99831284441.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/431be19d-31b9-4961-b156-52d8db1c7ba4/nitonolumagidilu.pdfIn PDF document text
    • http://vulazojab.pbworks.com/f/bajrangi_bhaijaan_full_movie_subtitle_indonesia_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca471bdf-6ddf-4b14-b382-bc5ef4148edb/revotirid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cceeeac9-4cb3-4b44-bcb3-4f941c15fd4e/zotonetizekofijagusan.pdfIn PDF document text
    • http://lulatigono.pbworks.com/f/l_and_r_pronunciation_practice.pdfIn PDF document text
    • http://mapaduzipi.pbworks.com/w/file/fetch/144506292/does_cp_company_fit_small.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99f2b1e6-b799-4b55-8f0e-1285c2d34923/fedete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a6e6fec-7fdc-4e4b-9080-a32fda9f667c/what_was_john_lockes_economic_philosophy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4910206-3e14-47dd-a731-b96ddf81e047/neruzonuvo.pdfIn PDF document text
    • http://lodenapokot.pbworks.com/f/what_are_z-codes.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_off0000ec58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC58 5576 bytes
SHA-256: c944682a2fb169d14fde0fd354d007043146bf741d2da51b6b3800ff654d2789
font_01_sfnt_off0000ff32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF32 10868 bytes
SHA-256: 6f285f8de973cb5061af67a9dbb5d627ebc1daafe2b217d3c52ddcc544465628

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