Malicious PDF — malware analysis report

Static analysis result for SHA-256 64d79018e63a05d9…

MALICIOUS

PDF

70.2 KB Created: 2020-11-09 23:50:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: d291e63280ca321234c8cc69fa62c7a7 SHA-1: adbb21fa060dfa52d6a4f262fe50f5f6fe08ba24 SHA-256: 64d79018e63a05d943136e7e61195e9ed2a5d566fcf3bab75cdff881923ab9ca
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?keyword=ac+moore+application+pdf PDF link annotation
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/ruxozukozuvazu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422378/normal_5f99955c5a7fa.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/zutilipevozafeguwu.pdfIn PDF document text
    • https://fifitusaperofij.weebly.com/uploads/1/3/4/6/134605769/dadudevi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/46250cbc-bd35-485e-9842-41a864d7cf7c/serial_brain_2_youtube_most_recent_videos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15dbd3dc-9830-4a2c-9171-f396e2e60188/54681409253.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c4bf9b9-aea9-451a-bda8-b208ec0f1407/27026078791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff35e966-b2ab-411c-bc8a-48fc0e88f182/48746352736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/431bc030-58e6-43ef-85ca-1b1b6738294b/duvunuvorarajemonelat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c0d4203-6712-40f2-90e5-61fe5315cf1a/kejurebederimiponudabapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db65766f-2a33-4574-963a-d1a7872775e6/pigexugimefatilif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82238e02-a132-4c2a-829b-d1b4b030cc4e/29657146674.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed7074f5-e848-4071-b1c8-8383ff81c0fa/15030149533.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_off0000d6ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AD 5112 bytes
SHA-256: 2cb9b677109cdf60f97b89053b7c1e2b5bc7294240e5d480b428b0d6499064a7
font_01_sfnt_off0000e7fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7FB 10896 bytes
SHA-256: c70b075015934ef7a744ecbd1071651f0c46baafa3b7c36d67dbd52e917033fd

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