Malicious PDF — malware analysis report

Static analysis result for SHA-256 34b38a1164388ed8…

MALICIOUS

PDF

67.5 KB Created: 2021-02-09 04:11:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4a5b760baf60544cb0542b85a9d6a60f SHA-1: 45922330151c603557ee893650db5ef846199d03 SHA-256: 34b38a1164388ed80b4ff26b46f7ab8712087a9961f56c8759466120a82f16df
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://leonvi.ru/wb?keyword=developer%20cv%20template%20word%20free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409417/normal_5fd7b91762a83.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418370/normal_5fcdc0619c11e.pdfIn PDF document text
    • https://wukarogokemek.weebly.com/uploads/1/3/0/7/130739107/gojojopaxub.pdfIn PDF document text
    • https://zodazapel.weebly.com/uploads/1/3/4/5/134511258/5372884.pdfIn PDF document text
    • https://mazanotofubemiz.weebly.com/uploads/1/3/2/6/132681192/raretureka.pdfIn PDF document text
    • https://fofunefiwipap.weebly.com/uploads/1/3/1/3/131384211/4474080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388611/normal_5fd8517d3e411.pdfIn PDF document text
    • https://cdn.sqhk.co/sexobivobufo/ejawghe/freeway_closures_los_angeles_this_weekend.pdfIn PDF document text
    • https://boxuvudadutubip.weebly.com/uploads/1/3/2/6/132695546/litakekisuju.pdfIn PDF document text
    • https://dabusoze.weebly.com/uploads/1/3/4/5/134585091/zelivodoxanuzu-tiwatiwu-kopimoxewab-saxize.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_60120970c3639.pdfIn PDF document text
    • https://sawulazu.weebly.com/uploads/1/3/4/5/134588127/9772705.pdfIn PDF document text
    • https://cdn.sqhk.co/tajixixejafi/cHV8In3/xorozumutozunifitit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://davojuke.epizy.com/52707544210.pdfIn PDF document text
    • http://tukutuxobolekub.epizy.com/39350427582.pdfIn PDF document text
    • http://doboroguvenuv.epizy.com/apple_music_android_login_problem.pdfIn PDF document text
    • http://lasuwutiganije.rf.gd/bible_study_topics_for_adults.pdfIn PDF document text
    • http://lesiterifok.epizy.com/xijijobede.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_off0000cb85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB85 5276 bytes
SHA-256: 87ea7bb37b635bd376a3ca6a6dc7b753fc30b062dd3f15373de475b31211d13f
font_01_sfnt_off0000dd7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7E 10452 bytes
SHA-256: a90f9189007b457d747586e899d78619686c9c8a8a5300a6205611a6e6d18dd6

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