Malicious PDF — malware analysis report

Static analysis result for SHA-256 26fa51e03ff0e2f6…

MALICIOUS

PDF

71.4 KB Created: 2020-11-27 22:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-18
MD5: a3c1042f42fdb85e7dcc7b8054b23c33 SHA-1: 5707caca644ed961a5d906eb6a07c07b15777d8b SHA-256: 26fa51e03ff0e2f69c24eba1fe48d24b525fc51430286deec15912ee55cc6cfa
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://trafffi.ru/strik?utm_term=someone+to+stay+movie In PDF document text
    • https://s3.amazonaws.com/vasagesorajirem/83328795618.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411682/normal_5f9db06487722.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/1.1.2_answer_key.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366637/normal_5f9072a16fb30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412591/normal_5fa73ecb77062.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/upsc_preparation_books_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/sri_adichunchanagiri_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/arrests_in_lehigh_county_pa.pdfIn PDF document text
    • https://guzugalaxob.weebly.com/uploads/1/3/4/7/134767263/menofet-lokeribife.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/fopar.pdfIn PDF document text
    • https://satobawugeg.weebly.com/uploads/1/3/4/7/134701522/tuluxuxegi-tidojosezon-memotido-bajatafokego.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/47296900789.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cd01.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cd01.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0001027b.bin)
    • https://uploads.strikinglycdn.com/files/47fa816e-150e-48f3-894f-8c6c1f798bae/download_film_la_la_land_mp4.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5cf77c7-882a-4dad-819f-56330571d2b7/ordinary_annuity_vs_annuity_due_vs_perpetuity.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 extracted file (font_00_sfnt_off0000cd01.bin)

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD01 4756 bytes
SHA-256: 3b50bf1d8586960e41eec262a2f763dd90ad4c6c8e71a8e32c65111dba4bc668
font_01_sfnt_off0000dd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD12 11016 bytes
SHA-256: 05e4f5c1277a1f594625c3fef11ffe5f29301bdf21c36d8b13dc1bb6e09b8158
font_02_sfnt_off0001027b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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