Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e193e6ba936817…

MALICIOUS

PDF

81.7 KB Created: 2021-04-04 22:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 57f8accb91f570e04cdcdc24c3fca885 SHA-1: c6e353ea70e4c71fd9e7ca5640e581e384a6bc1e SHA-256: 04e193e6ba936817526161e7be7769de6501a2379502a3acb27d32e0aa2b36bb
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous embedded URLs, with several pointing to disposable hosting and link farms, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, contains keywords related to a food menu, likely a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/award?keyword=dave+and+busters+food+menu+pdf PDF link annotation
    • http://wamipigobabi.22web.org/yang_mills_mass_gap.pdfIn PDF document text
    • https://kapelasijad.weebly.com/uploads/1/3/4/3/134312752/pisenezaxided.pdfIn PDF document text
    • http://rogosevit.22web.org/89245066276.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443610/normal_602c6acecef69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478414/normal_5fe5b4d983fb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412591/normal_6008181628096.pdfIn PDF document text
    • https://lurenejaxerugu.weebly.com/uploads/1/3/4/7/134728533/ruwupemamanuz_xevusagaruduz_furudivakedu.pdfIn PDF document text
    • https://kaseloguxov.weebly.com/uploads/1/3/1/4/131406527/vijejuzove.pdfIn PDF document text
    • http://kifejuja.medianewsonline.com/52097411351.pdfIn PDF document text
    • https://jaketomerinojox.weebly.com/uploads/1/3/4/1/134109184/ba007ae6346539.pdfIn PDF document text
    • http://segolepeponiv.iblogger.org/define_authorized_share_capital.pdfIn PDF document text
    • http://pafowitowa.medianewsonline.com/fofitovamavo.pdfIn PDF document text
    • https://vilifamizebu.weebly.com/uploads/1/3/4/6/134617150/wazisebisepuk_jasewapekaju_pirum.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/net_framework_version_2._0_sp2.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/vipafazoluva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/293fabac-6820-42c6-9300-eb17ae7a4458/hard_5th_grade_math_problems_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dda7d5c-d19c-43c2-9360-d940d719b2c4/katodap.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/34723126505.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ec397c-5fe6-4cd9-b427-8fafcafbbb85/42444108350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ccbd87a6-ffaa-4370-baba-9fe81662efe9/why_is_my_portable_air_conditioner_leaking_water.pdfIn PDF document text
    • http://wegugoleta.onlinewebshop.net/csb_apologetics_study_bible_for_students.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c69866d6-010a-473a-a6c3-ee89cf21084c/76998870689.pdfIn PDF document text
    • http://xavelatevina.epizy.com/metaphysical_poetry_john_donne.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/radapetapi.pdfIn PDF document text
    • http://forilojemani.epizy.com/vacuna_antirrabica_humana.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF472 5188 bytes
SHA-256: 190ede269a727b8cbc003ec04819c27a7030e07fd6b96588aa216936611158d9
font_01_sfnt_off000105fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FD 10956 bytes
SHA-256: d1f011fdd0eebf6027cad6f0fa224575322078d9a7899b6d97a929f3418a1633
font_02_sfnt_off00012b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B43 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3