Malicious PDF — malware analysis report

Static analysis result for SHA-256 901299fada0a1c9d…

MALICIOUS

PDF

77.1 KB Created: 2021-03-13 22:08:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 3ce082a0daaf8c6ee9ccfce33529d924 SHA-1: 1a45861417305b4e1136def4064e4ed42952a957 SHA-256: 901299fada0a1c9de3f9bf22d3be923781ec53d66614810f8c093c161c367aae
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although the document body is heavily obfuscated, the presence of a malicious URL suggests the intent is to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/123?utm_term=abhishek+name+video In PDF document text
    • http://pixelbarista.com/relative_clauses_quizb64ap.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/nutopaludomufanefusuxi.pdfIn PDF document text
    • http://safetymirrors.xyz/861520367485grqs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_602e67d9daa18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373985/normal_5feb97ee14de4.pdfIn PDF document text
    • http://legrand-spb.ru/zuxiruxijezunugixekotojli52f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378836/normal_60461e810d949.pdfIn PDF document text
    • http://xitodefigatefuj.medianewsonline.com/jugebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452594/normal_600c8c858e880.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496216/normal_603738c9e466a.pdfIn PDF document text
    • http://cesaregaspari.com/remington_700_sps_tactical_stock890ny.pdfIn PDF document text
    • http://igafnd.org/bazofiruzimaigagb.pdfIn PDF document text
    • http://fafuzum.sportsontheweb.net/buxifuribefureradixasijon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392853/normal_604a5df1d3145.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ginowane.onlinewebshop.net/the_standard_insurance_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/verbs_tenses_exercises_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/22928374700.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/27556118589.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/pcsx2_playstation_2_emulator_free.pdfIn PDF document text
    • http://mowigibimubepi.rf.gd/kajimiduzosudobujeroz.pdfIn PDF document text
    • http://nigagemi.rf.gd/glittering_cave_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/87490094827.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/rowizejanud.pdfIn PDF document text
    • http://mibobugaf.rf.gd/feranumax.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_off0000eeac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAC 5192 bytes
SHA-256: 5ea13b5d75690f96832253358429da0c79a1818126ff3feec0e5223aabbd91bc
font_01_sfnt_off00010031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10031 11504 bytes
SHA-256: 3beeb7685e6d3ed7d2b03c92811dd0e6d895ce8730c07419501991bb9ad979aa

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