Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d8e26cbccb059c…

MALICIOUS

PDF

72.8 KB Created: 2021-02-26 03:02:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d534958ba510d2d0221426f1d13d22d8 SHA-1: d283c83952214bb4c75006679bc1ec3c7d380c22 SHA-256: c2d8e26cbccb059cda4854bb0ce1bbec463ca61901614d7b35a667c7e7361e37
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/award?keyword=hp+4500+driver+install PDF link annotation
    • https://xarojitoma.weebly.com/uploads/1/3/5/3/135305856/pesotof_mozemagujapovov_vasebigolepuke_suxozama.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367283/normal_602bde9c7006c.pdfIn PDF document text
    • https://tiwibuvemugijaj.weebly.com/uploads/1/3/0/7/130776889/wigipifelaguj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418993/normal_6023465748ca9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408996/normal_6007e1525071a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455907/normal_5ffd7c78d2f5b.pdfIn PDF document text
    • https://pugerazetowed.weebly.com/uploads/1/3/4/3/134341851/famavuw-torededaf-rigodusis-gukexiti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/3315691654.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/azure_cosmos_db_graph_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/blufftitler_11._1.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/apple_facetime_mit_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/ditovemum.pdfIn PDF document text
    • https://s3.amazonaws.com/bodajaku/javobowurenawutoxexi.pdfIn PDF document text
    • http://javajese.epizy.com/d_d_3._5_aberration_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/reckless_love_viola_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/pevogezibexawepipudikut.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_off0000e03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03F 5328 bytes
SHA-256: 9c9854c92d47e0285b7ae8b84d8965c36c62e3e707763874df4cfd59947cd713
font_01_sfnt_off0000f27e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27E 10392 bytes
SHA-256: 3a2d791775378a57baf82d0b24cdca8b0b2fa6e4daf7edbc217541773835af2c

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