Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc86e2f887bbbe6…

MALICIOUS

PDF

67.0 KB Created: 2020-11-26 08:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 37bb3084e4e0bdb69120a70cf6dd92d5 SHA-1: 69f805eb4a9c8ceaff1bd6bc74bd421ba091ebd0 SHA-256: 1dc86e2f887bbbe65a6a6c4bedb753686d61f7997defbafa3e2f6f952da8dbd1
262 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/wb?keyword=formal%20letter%20format%20for%20request%20university In PDF document text
    • https://duxebiforup.weebly.com/uploads/1/3/4/0/134013009/zuveles-wabakevaduxube.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/6ddc7e2e54594.pdfIn PDF document text
    • https://besozidemupi.weebly.com/uploads/1/3/4/6/134635439/3897894.pdfIn PDF document text
    • https://getedizexagan.weebly.com/uploads/1/3/0/7/130740146/7629414.pdfIn PDF document text
    • https://rojaduvesasesa.weebly.com/uploads/1/3/4/7/134751848/dojoji_kiwefotad_legizipudiluf.pdfIn PDF document text
    • https://lolusegixasuvar.weebly.com/uploads/1/3/4/7/134770702/3198115.pdfIn PDF document text
    • https://voxepobar.weebly.com/uploads/1/3/4/6/134668427/vedunoruw.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/muxozuvalubi/5737451839.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/flight_training_handbook_ac_61-21a.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/phet_kinetic_molecular_theory_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/somujesuzinoxazodidatujad.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/namenawam.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/canon_printer_driver_free_lbp6000.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9DC 5156 bytes
SHA-256: 0e03c486c97610e61661050116c5f2802c52750e732605868c3bcae8e64b454e
font_01_sfnt_off0000db61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB61 10924 bytes
SHA-256: 9d5c37ad04c05fc099810a7658209b3b67ef7e35b92c77913002529adc49a101

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