Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b617a3f9119dc9…

MALICIOUS

PDF

68.4 KB Created: 2020-11-12 15:57:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 9bff1172b5d8797d3bd1b12ea7bdc3a5 SHA-1: f166f8589bf5c854c23deee56fee3973749f6481 SHA-256: 72b617a3f9119dc934d9f8d7d995beeb0646bd82820be024a50d0b87c3f64b7c
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?utm_term=amazing+spiderman+2+apk+obb+download In PDF document text
    • https://lolipakefupixo.weebly.com/uploads/1/3/4/6/134614949/9986430.pdfIn PDF document text
    • https://besajovepew.weebly.com/uploads/1/3/4/6/134633036/nakasediboba-nojatitujareb-lelitases.pdfIn PDF document text
    • https://vefoxetewezelir.weebly.com/uploads/1/3/1/4/131483279/9326128.pdfIn PDF document text
    • https://kilunifogewawo.weebly.com/uploads/1/3/4/4/134457757/6c0f769f5985.pdfIn PDF document text
    • https://julapaxukej.weebly.com/uploads/1/3/4/4/134492969/zepexesipejafofug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368481/normal_5f94031da25ca.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/vufupu/malachi_martin_books.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/why_mosquitoes_buzz_in_people_s_ears.pdfIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/46304508888.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/bisacodyl_davis_drug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64c657fe-0981-4553-a167-8a1e83cf454e/jajilo.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/defipeza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc2a17b1-da08-4f8a-87d3-a6ea4e0a9d91/directions_to_garden_state_plaza_mall.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_off0000cec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC6 5744 bytes
SHA-256: 364092ef2819255b8a976b4c82a780044f61658eb0c905fcdfaba3a0ec475f33
font_01_sfnt_off0000e254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE254 10204 bytes
SHA-256: 7aed9c4006366dfce1dc05f8a26bcc4f253e50943af60244e8372e2c40d9cebc

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