Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8bc86a6bd7b511…

MALICIOUS

PDF

72.4 KB Created: 2020-11-17 08:07:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 3728ed26b6c4df46746596c53e2231bf SHA-1: ad5484125bed178fd05b28493169bd49cb8c5b6b SHA-256: 5d8bc86a6bd7b511e2a892868f6611217bd879a6cad77f07c5166521d3791118
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/123?utm_term=all+terrain+knee+scooter+for+sale In PDF document text
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/9267408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469365/normal_5fac576be3220.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5f875efe79167.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/4bc66157-3fcb-4a14-8336-5124b007afa6/classical_economics_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/780f5199-bac0-4a62-b124-2a095fb2ed01/10696810530.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/brooder_house.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/jilesugejev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7718e798-adcb-4715-82b6-7cf74ef0df17/sony_hxr-nx100_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe37170a-0334-48ce-bc85-ded24a715e18/ligisarorose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d33a2238-6c44-44af-a301-9319f2590f89/27490798194.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/980dbd8c-f91c-48da-9082-e7977db510fe/96_jeep_cherokee_fuse_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/daverabikavorofizef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/984572df-af23-4a48-a0c7-037f4593225e/86066782964.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_off0000ddd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD9 4928 bytes
SHA-256: 8494f8cdd15b8fa769634f37c2005aa9d500d996d2ddd5c7ec851ebe73400047
font_01_sfnt_off0000eead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEAD 10816 bytes
SHA-256: c337754a24057e055bbf5b8cf28b5e75044cb851e3ba57cfb606c1dfc0d3c16f

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