Malicious PDF — malware analysis report

Static analysis result for SHA-256 298401884744fa82…

MALICIOUS

PDF

94.1 KB Created: 2021-06-12 16:28:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7e11f243fe1c1714126e89e981c2f6d SHA-1: e302afced86ec7ff82bcacd02f15a5cfcba5aaa9 SHA-256: 298401884744fa82ac33fec9de1934a47fb1aef746358959ac07795716556230
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, suggesting it's part of a link farm or phishing campaign designed to redirect users to potentially harmful websites. The primary URL identified is https://drafthe.ru/pbw?utm_term=ps1+and+ps2, which is likely the intended destination for the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://drafthe.ru/pbw?utm_term=ps1+and+ps2
    • https://xubidanata.weebly.com/uploads/1/3/4/8/134895671/391639.pdf
    • https://mopuxemunokele.weebly.com/uploads/1/3/5/3/135318458/8245375.pdf
    • https://rimesukanol.weebly.com/uploads/1/3/4/7/134746435/filepawep_kobibo_vitiker_wowonimufe.pdf
    • https://cdn-cms.f-static.net/uploads/4392868/normal_6059ea809141e.pdf
    • https://nulodikoz.weebly.com/uploads/1/3/2/7/132740439/efaff.pdf
    • https://cdn-cms.f-static.net/uploads/4380543/normal_6013f7d38065e.pdf
    • https://mubopizolofovo.weebly.com/uploads/1/3/4/4/134442803/wunapolujiki.pdf
    • https://wezefumuge.weebly.com/uploads/1/3/4/6/134614004/dipawodogun-zetarutojuf-jufibotegeve.pdf
    • https://dejokorakas.weebly.com/uploads/1/3/1/3/131379117/5484737.pdf
    • https://cdn-cms.f-static.net/uploads/4488581/normal_6023daaf3505a.pdf
    • https://wupixizot.weebly.com/uploads/1/3/5/3/135398135/tetoxidixipilug.pdf
    • https://gorijifezavu.weebly.com/uploads/1/3/4/5/134502749/8219253.pdf
    • https://muwalarole.weebly.com/uploads/1/3/5/9/135959937/c950aaf.pdf
    • https://cdn-cms.f-static.net/uploads/4446643/normal_603b4f7dd3910.pdf
    • https://static.s123-cdn-static.com/uploads/4496380/normal_5ffcaaf49aaa9.pdf
    • https://gesunewa.weebly.com/uploads/1/3/1/4/131438127/nokesifuno_vugafavijixumor_fudojurun_xavifanorure.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zobifel.pbworks.com/w/file/fetch/145193169/91881976350.pdf
    • http://fafukite.pbworks.com/w/file/fetch/145164480/harry_potter_and_the_chamber_of_secrets_digital_book.pdf
    • https://uploads.strikinglycdn.com/files/c99c69d2-950f-49ae-9975-09f5f260e352/what_is_the_novel_pride_and_prejudice_about.pdf
    • https://uploads.strikinglycdn.com/files/81deded0-9d6b-4380-91f0-3e193c287bef/death_stranding_end_explained.pdf
    • http://juboxeraris.pbworks.com/w/file/fetch/144919209/how_find_atomic_mass.pdf
    • https://uploads.strikinglycdn.com/files/1281319c-5de4-4151-af44-03e685df0608/vilizonori.pdf
    • https://uploads.strikinglycdn.com/files/c7d4360b-997b-4d8b-8920-e8eb3b3b1d56/vopixanewim.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f99d.bin
1fbfb25241584b31856bf3955c36312947effc3d02b7866d50db7f1df4e8e331		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF99D 5120 bytes
font_01_sfnt_off00010b65.bin
de7009011661c9cf01dd7ea043869c851c9cd497c4d0be50608ad627c136e5ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B65 5012 bytes
font_02_sfnt_off00011c8e.bin
91b4f4a6bf5a97316efc7a4661f5ca3ea891378d3ed7f386d62c862488270be4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C8E 21480 bytes
font_03_sfnt_off000152a3.bin
29e2bd439056fc953bd3035c12fca830e0eda2aadfb51bd1447ea3d179e87fd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152A3 16528 bytes

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