Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b6839de967974c…

MALICIOUS

PDF

78.7 KB Created: 2020-08-10 11:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30ea643b760f104aad845a8e0de8201e SHA-1: bb56e6ee2359aeba895b2aea002fffa82c8debb2 SHA-256: 45b6839de967974c2a8fa2ea2b7d0ff6617c2b49f8c5d0ce166886a96c0a2b0e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it features a link farm with numerous external PDF links, suggesting a tactic to artificially inflate search engine rankings or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=pdf+filter+ccittfaxdecode, which is likely used to redirect users to further malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.ru/pify?keyword=pdf+filter+ccittfaxdecode In PDF document text
    • http://sabavuxi.thesecretroombook.com/uploads/1/3/0/8/130814328/wubejaxodutuj.pdfIn PDF document text
    • http://files.jbarnastudio.com/uploads/1/3/0/9/130969527/bilepopepadure_kajadaje_babubaselam_gobopip.pdfIn PDF document text
    • http://files.crlangille.com/uploads/1/3/1/8/131871994/6274082.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6533/5190/files/sugotozetigizeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2402/9608/files/faserovubofifusujowejimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4131/7276/files/zokojagonunese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5014/7745/files/94718748162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/fundamentals_of_modern_vlsi_devices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7957/files/33355729155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7817/9221/files/57283378431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/wunasisosolisejib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2127/9137/files/gta_vice_city_san_andreas_cheat_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3191/2857/files/57771011041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8504/2598/files/bijection_rciproque.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 3

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_off0000f0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BF 4904 bytes
SHA-256: 0bb1c0966010f50400998f28602b648808e0031804e3b7d25b9714e8756c5e3d
font_01_sfnt_off0001017f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017F 13776 bytes
SHA-256: bad3fbf9ce21a76065be5a96bf007fc835c6c4917871d709192777f0d9e3a1be

Open this report in the interactive analyzer, or submit your own file for analysis.