Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f9e16484361b1a…

MALICIOUS

PDF

88.6 KB Created: 2020-11-24 01:45:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-13
MD5: 951add30a6d1b83f6e06479651e3902b SHA-1: a1e6ed55fa08b9d94ca8c4888a9078baf9f4902a SHA-256: f2f9e16484361b1a78a23c17a5d08757fe3179cb76c4b595564a5cb406b3d7f7
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wb?keyword=prevent%20form%20submit%20jquery%20mvc In PDF document text
    • https://xulopoxaxuwuzoj.weebly.com/uploads/1/3/4/5/134509354/nelonafosatejuwetos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465705/normal_5fa7dd50cbc1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447436/normal_5fa308ab1a6c5.pdfIn PDF document text
    • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/gipigosezu_nanoxaforejeki_govivugifewi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414860/normal_5fa641e6a73d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384822/normal_5f91d650eb93c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448744/normal_5faefe538b8e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411935/normal_5fa4ba00e8736.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/kotenu/54744903657.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/97868731023.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/68345671891.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/26423348411.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/banjara_video_call.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00012aa1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12AA1 24740 bytes
SHA-256: 7528300df104cd505a66ebdf4ec1ea061d5edfb8da6bd9d45d434ffca61e074d
font_00_sfnt_off0000e447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE447 3016 bytes
SHA-256: 2d46eb82ef989a8b81078a03720fa9cc8f3d34b8eec63664c65aed1d12df8d85
font_01_sfnt_off0000ef0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0D 5292 bytes
SHA-256: 42a5e17693168df27b682a2455fb8448cb90b214bd423bebc862f8f02347e9d1
font_02_sfnt_off00010116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10116 12116 bytes
SHA-256: 85d193bde3c185c3e6c0ce6cba96bee7509efbbaed259071ae82e67907fe4079

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