Malicious PDF — malware analysis report

Static analysis result for SHA-256 9492a875e1e0f937…

MALICIOUS

PDF

67.4 KB Created: 2020-12-09 19:24:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-11
MD5: 1f31310ce5a7da90c9de0e8ae3be7167 SHA-1: d218b6f9ff35e4ba43e305232543a590a2811596 SHA-256: 9492a875e1e0f9377617233eb1a4debca8c0dec179f2bda525f145d7f4251acb
279 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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://gettraff.ru/wb?keyword=the%20depths%20below%20sheet%20music In PDF document text
    • https://cdn-cms.f-static.net/uploads/4456393/normal_5fbd843c9b77d.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/the_curious_case_of_benjamin_button_book.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383136/normal_5f96f0938d2c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369311/normal_5f944a0ac4e66.pdfIn PDF document text
    • https://pilidikuvitas.weebly.com/uploads/1/3/4/7/134766888/8487799.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/oregon_blacktail_deer_hunting_guides.pdfIn PDF document text
    • https://dakesepev.weebly.com/uploads/1/3/4/3/134308776/83d2699.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/mirulonajelajubabonira.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370767/normal_5f8d32c83360d.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/lagu_averiana_barus_lalit_dua.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416928/normal_5fc5e5fa8cc7f.pdfIn PDF document text
    • https://wubigunes.weebly.com/uploads/1/3/4/5/134507070/7832715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_5f90a9724f1bf.pdfIn PDF document text
    • https://nazuvunu.weebly.com/uploads/1/3/4/4/134438845/326a0d42e9e072c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5fd0af4957ae3.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cc56.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cc56.bin)
    • 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_off0000cc56.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC56 5188 bytes
SHA-256: 2614184f21539dad177dad7d35fc69f8d7ca7b78e49bb32e0f9dc5bd8585cc50
font_01_sfnt_off0000dde7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE7 10232 bytes
SHA-256: e3d68b9fe264aa17835a7bdb113376620dcc3977954ec80b7dbea804a7fb5a1e