Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8c6aedd7bb8ab31…

MALICIOUS

PDF

42.8 KB Created: 2020-08-24 04:26:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12e01743b6e2423119c835432c632546 SHA-1: 8f03b6326527800da89a0f0cdc27b0c30210f2ac SHA-256: f8c6aedd7bb8ab3113b4eb71c233e58f8c3dea8e83d737314e8bd17238b6b875
194 Risk Score

Malware Insights

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

This PDF file contains a link farm designed to mimic search engine results for free PDF books, a common lure for phishing and malware distribution. The primary link, 'https://ttraff.com/pify?keyword=accounting+principles+13th+edition+free+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the same lure and the redirector URL, reinforcing the malicious intent. No scripts were extracted, but the PDF structure itself is used to facilitate the malicious redirection.

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.com/pify?keyword=accounting+principles+13th+edition+free+pdf In PDF document text
    • http://files.studioviemen.com/uploads/1/3/0/7/130775465/xurewetak.pdfIn PDF document text
    • http://files.nlhammondphotography.com/uploads/1/3/0/7/130740502/votezomujudod.pdfIn PDF document text
    • http://files.themanimalchronicles.com/uploads/1/3/2/6/132680813/9517390.pdfIn PDF document text
    • http://files.beitnachum.org/uploads/1/3/1/4/131483253/ximegigojepirez_rabisosip_suwupisi.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/1/0463/0550/9533/files/suv_muv_xuv_full_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/47548980661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/wafelexum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3041/2450/files/44959784624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/biomassa_livro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0948/2658/files/durovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3542/5944/files/gcse_physics_acceleration_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9667/8301/files/biotic_and_abiotic_environment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1413/9558/files/zemesulizitejum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/72513221122.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_off000065a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A2 5412 bytes
SHA-256: 410d686ad428e61821d3f2ef99eaf98fb7eccb2999c4099d77ca822f22a23804
font_01_sfnt_off0000780b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x780B 10652 bytes
SHA-256: 83cc1ab24cf3e99c7faed2c7fe79f427f4ebc091d25678002e6b6cfe1dc762cf

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