Malicious PDF — malware analysis report

Static analysis result for SHA-256 d096b0b3957a1ca8…

MALICIOUS

PDF

80.0 KB Created: 2021-03-29 16:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b5695576da34f2a9cbf1da04d95bd481 SHA-1: 70980ac0e6357037a5f83633ac6a79a16e6c3e40 SHA-256: d096b0b3957a1ca89e200a80ba8dae6d1b2d6821949b3d0b38bc0d811115d3fc
186 Risk Score

Malware Insights

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

This PDF document is classified as malicious, exhibiting characteristics of a phishing or link farm attack. It contains numerous external links, many hosted on disposable domains, designed to direct users to potentially harmful content. The document body, though heavily obfuscated, appears to be a lure related to 'The Expanse book 2 recap'. No scripts were extracted, but the extensive link farm and the ML classifier's high confidence score indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/strik?utm_term=the+expanse+book+2+recap PDF link annotation
    • http://amaryllis.space/bexefagaxomekamaxoruzi2by.pdfIn PDF document text
    • https://cdn.sqhk.co/wowobavukelo/idKhajd/download_tic_tac_toe_glow_apk.pdfIn PDF document text
    • http://naturagrush.space/zuzajojuvojofexobowo9hwp.pdfIn PDF document text
    • http://car-den.ru/bekezemesezejuxvqtio.pdfIn PDF document text
    • https://jezaxinadi.weebly.com/uploads/1/3/4/5/134597346/476bae.pdfIn PDF document text
    • https://setovejuno.weebly.com/uploads/1/3/2/6/132682792/850435.pdfIn PDF document text
    • https://cdn.sqhk.co/fezajuwu/bjfr41Y/just_dance_controller.pdfIn PDF document text
    • https://cdn.sqhk.co/xojugako/Rgg9qhb/albumin_ikan_gabus.pdfIn PDF document text
    • https://cdn.sqhk.co/gavezexu/FggFgcg/derekikizadi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b0c090b1-cb02-46d8-8a69-3fb9d82636b6.filesusr.com/ugd/4dbf3f_923c99464c584831be3f262cafee714b.pdf?index=trueIn PDF document text
    • http://rawegutidum.onlinewebshop.net/superannuation_guarantee_administration_act_1992.pdfIn PDF document text
    • https://1eba3b37-3dce-45e8-aa15-e51a58efc0fe.filesusr.com/ugd/89e37c_29a55f58a82c4f15b9e549c40ac71d44.pdf?index=trueIn PDF document text
    • http://viwuwijagabote.myartsonline.com/gre_math_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1f4c07b-b625-458f-8db9-0c023d1c9b21/all_you_need_to_know_about_the_music_business_ninth_edition_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d454d95-e02b-4fb3-82ca-3cad3b4ccfba/52520850490.pdfIn PDF document text
    • https://dc688580-c0ec-4ade-910b-7abffd870ab4.filesusr.com/ugd/096b61_61be4984af214465a1e8d0fdbf5f531d.pdf?index=trueIn 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_off0000fc24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC24 5344 bytes
SHA-256: 103b5e101abf008c650e804175ab3e9783511ba213a6f1f3345912cdbe3a24d7
font_01_sfnt_off00010e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E47 10332 bytes
SHA-256: 7f27cc3e62d55374784bd95f928ee79ebd9357f2394d277f9e4ae1ff8e6c732b

Open this report in the interactive analyzer, or submit your own file for analysis.