Malicious PDF — malware analysis report

Static analysis result for SHA-256 74340d8f33d527a7…

MALICIOUS

PDF

72.9 KB Created: 2021-02-26 21:33:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8dbc7e6f0c6c680e8611107effe63864 SHA-1: 61e8d1b63e1e2970a405eb5ffe32928e9d7daec5 SHA-256: 74340d8f33d527a7c8bd4cd5b8af7d121a3cec171a956bfbbcb064406ffd6b8e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://golowaki.ru/award?keyword=iliad+homer+summary+sparknotes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393755/normal_5fe43539dd226.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458161/normal_6005e5ad6e2f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410448/normal_5fdac56c96202.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419218/normal_5fe70cedb01bb.pdfIn PDF document text
    • https://cdn.sqhk.co/duloputemab/N7iahFL/99973283119.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418401/normal_602ee722903ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406820/normal_602b52c63f908.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_6010b18d01f1e.pdfIn PDF document text
    • http://vanimerukaguto.scienceontheweb.net/votuxezurenizugij.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/9eApTvQ/xbox_series_s_controller_skin.pdfIn PDF document text
    • https://cdn.sqhk.co/manizamo/LYighbx/makotulab.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
    • http://damokoz.epizy.com/guinea_pig_care_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/apa_citation_guide_reference_list.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/awdhesh_premi_bhojpuri_video.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/wexopa.pdfIn PDF document text
    • http://jinujatafariva.rf.gd/23978135384.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_off0000d673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD673 5184 bytes
SHA-256: cfa948229b0d594dd186aa43799fe251a39d0ff4f6a32ea4b67968e24fd1f582
font_01_sfnt_off0000e7e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E7 9616 bytes
SHA-256: 738869b23525f9e29ea240085d41809421000d54d0488df1007ed74a5f366ad0
font_02_sfnt_off000108ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108CA 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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