Malicious PDF — malware analysis report

Static analysis result for SHA-256 89244ac2a1d53dc9…

MALICIOUS

PDF

63.6 KB Created: 2020-11-11 01:31:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 09f00f3647cf6a39548b10b016eb7d38 SHA-1: 1eac23c0cde4bf6365ca49a17f189c6c91086a8f SHA-256: 89244ac2a1d53dc954e1e46ef154c8940e4c8a1fe73f102ec0e041a11ee2a0f6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/aws?keyword=foot+locker+plans+wood PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393180/normal_5fa1183642703.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/bewomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385876/normal_5f96ef0e90190.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/wuduzomadanomom_takezezonepoxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371013/normal_5f8af94e2b76e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388163/normal_5f8f1f6f415a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446937/normal_5fa361f9494ae.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
    • https://s3.amazonaws.com/lokijuronig/40846247126.pdfIn PDF document text
    • https://s3.amazonaws.com/kalufizefem/leech_lake_fishing_guide_service.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/989c1353-f5b0-4dd8-ab31-e2e10dc514da/xogewavekepazosobiko.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_off0000b30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB30B 4920 bytes
SHA-256: 74fe336b0b13360f3f17479b6a0e2ed6db1e36d6007c1016092d950e50b0665b
font_01_sfnt_off0000c3db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3DB 9324 bytes
SHA-256: 123458d339b5e2ede8864dfb2bf01c80a65c495a6c4ce96b0230854f97e27edd
font_02_sfnt_off0000e3d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D4 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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