Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0ffd855ca76e6a…

MALICIOUS

PDF

75.6 KB Created: 2021-04-06 08:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ab012c198a8b2b01b0f37db09beb8ffa SHA-1: d111119e9d696af777ff0e9711f3e71b633be593 SHA-256: 7e0ffd855ca76e6a1e8235e749bd5661712d99fdc0b76e14958051917935dce2
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary suspicious URL identified as 'https://lozipotod.ru/123?utm_term=free++majesty+2+for+pc'. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for link farms, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://lozipotod.ru/123?utm_term=free++majesty+2+for+pc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5ff67863017ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486344/normal_605f85a2f2904.pdfIn PDF document text
    • https://razabajase.weebly.com/uploads/1/3/4/3/134355763/mabuvanusibibotar.pdfIn PDF document text
    • http://rabejagoruwobol.66ghz.com/aws_cli_cloudformation_get_parameters.pdfIn PDF document text
    • https://fukorolavo.weebly.com/uploads/1/3/4/6/134639224/vakugivemosufenajalo.pdfIn PDF document text
    • http://mantenancie.com/faber_piano_adventures_level_1_audior2p3a.pdfIn PDF document text
    • http://fabermanufacture.ru/how_do_you_chant_nam_myoho_renge_kyo_for_moneypune4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477630/normal_5fe88345e174f.pdfIn PDF document text
    • http://tejasatobes.medianewsonline.com/ashirvad_cpvc_pipe_fittings_catalogue.pdfIn PDF document text
    • http://asta-stroy.ru/what_cases_fit_samsung_a10er8lp1.pdfIn PDF document text
    • https://giruveme.weebly.com/uploads/1/3/4/4/134480937/telodexib-rivaxulor-lujevikefe-nuwubuw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379385/normal_5ff4d5878ad74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494891/normal_5fef344c0262f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tubagawidi.epizy.com/asvab_book_2018.pdfIn PDF document text
    • http://kijofolu.rf.gd/98646727835.pdfIn PDF document text
    • http://bafovupopevepus.epizy.com/pengertian_sanitary_landfill.pdfIn PDF document text
    • http://viwuleraxukopiz.epizy.com/two_circle_venn_diagram_template.pdfIn PDF document text
    • http://molagegivijoxu.onlinewebshop.net/brother_international_sewing_machine-cs5055prw_reviews.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_off0000e6fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FD 5396 bytes
SHA-256: caf518b2be301459a8a3823d2fbdf9bff0003a71324517d9699b04d208d952d7
font_01_sfnt_off0000f954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF954 11348 bytes
SHA-256: 814c10ecd1519e993eff1ec3e50efae3c96504c934287aa22424ef8bd1410fde

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