Malicious PDF — malware analysis report

Static analysis result for SHA-256 d063f42449ecedfe…

MALICIOUS

PDF

74.8 KB Created: 2021-06-07 12:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1eeb18622952d0916c107f9b000b24e0 SHA-1: ff5a92ee3034bea92bd8ee4b4a3ca95af446a7e3 SHA-256: d063f42449ecedfecc61e68877dbf40a10a1146fdedb096f9f19c99f84010b5a
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://drafthe.ru/pbw?utm_term=hp+laserjet+p3015+repair+manual PDF link annotation
    • https://pepexelizuruxu.weebly.com/uploads/1/3/4/6/134656498/67e55d7d.pdfIn PDF document text
    • https://danenogamapan.weebly.com/uploads/1/3/4/4/134481258/6661775.pdfIn PDF document text
    • https://xuduburuk.weebly.com/uploads/1/3/4/3/134323667/rilezanudufe_sazom_wazal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454694/normal_603cff27017f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493589/normal_6007cb1b0d2b1.pdfIn PDF document text
    • https://sekawoxovezu.weebly.com/uploads/1/3/4/0/134018239/senexexitomira.pdfIn PDF document text
    • https://donurufeto.weebly.com/uploads/1/3/4/8/134898164/dozaredubute.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490256/normal_60129ae2e8a49.pdfIn PDF document text
    • https://kepelawurolunuz.weebly.com/uploads/1/3/4/0/134017158/xajesuzotaguko-pegomiwagasa-balalejizukuxif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450044/normal_5fe6a58560dff.pdfIn PDF document text
    • https://wotewaga.weebly.com/uploads/1/3/4/6/134615540/1079639.pdfIn PDF document text
    • https://pitalozel.weebly.com/uploads/1/3/1/3/131384414/xefuxox.pdfIn PDF document text
    • https://dovesexafonom.weebly.com/uploads/1/3/4/7/134702519/50f22c5269522.pdfIn PDF document text
    • https://zakonuvuluj.weebly.com/uploads/1/3/5/9/135984705/8083159.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375541/normal_600932c3a33ff.pdfIn PDF document text
    • https://zubowosusotikip.weebly.com/uploads/1/3/1/6/131637009/wikirurujixef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gisugakeg.pbworks.com/w/file/fetch/144651549/78579377016.pdfIn PDF document text
    • http://dejulagimu.pbworks.com/f/how_to_print_2_pages_per_sheet_iphone.pdfIn PDF document text
    • http://bekojifutok.pbworks.com/f/vocabulary_workshop_level_e_unit_10_completing_the_sentence.pdfIn PDF document text
    • http://mifimoruzuwo.pbworks.com/f/solucionario_mecanica_vectorial_para_ingenieros_estatica_9_edicion_capitulo_5.pdfIn PDF document text
    • http://xosezoranad.pbworks.com/w/file/fetch/144755040/mewerawelobedeb.pdfIn PDF document text
    • http://marutipug.pbworks.com/w/file/fetch/144590412/maryland_state_inspection_regulations.pdfIn PDF document text
    • http://lutagunis.pbworks.com/w/file/fetch/144675417/fuxanesekivor.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_off0000e39f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39F 5484 bytes
SHA-256: 2b8dbdc5bd03794fe2c6dbe291f1838c76836d3854113ba8259d5b0aad60543c
font_01_sfnt_off0000f638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF638 11144 bytes
SHA-256: 491ffc3d09d46df1df219cb4a33a48114ec0ebe6a7488efd245e3ff556f2b4b6