Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bc3f32c10c439c3…

MALICIOUS

PDF

38.1 KB Created: 2020-08-12 00:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd4aa774ba6f494830ae311f6161bedc SHA-1: 47b8e5e24520b5267796ba64883964a550310035 SHA-256: 2bc3f32c10c439c3a79124f0bd5fdb84d82c5e0b0f2a69b012548ab2adced881
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.cc'. The document body, though partially corrupted, suggests a lure related to downloading a specific textbook, which is then linked to the malicious redirector. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm SEO tactic to attract victims. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt.

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.cc/pify?keyword=a+first+course+in+abstract+algebra+fraleigh+pdf+download In PDF document text
    • http://files.rightresolutioncic.org/uploads/1/3/1/0/131070849/gukajizujan-wipibuwaxineni-dudejixo-telapikefufer.pdfIn PDF document text
    • http://files.tieddownadventurers.com/uploads/1/3/1/4/131438759/24bfa0e8e9a9522.pdfIn PDF document text
    • http://files.yungschinese.com/uploads/1/3/2/6/132682134/sufakamoju.pdfIn PDF document text
    • http://files.hollywoodfashionmerchandise.com/uploads/1/3/0/7/130738596/dozezifid.pdfIn PDF document text
    • http://files.danielspiro.com/uploads/1/3/1/3/131397971/7739990.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/1/0437/3463/0554/files/ranologapotovidufinesil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0459/1254/files/bagewevoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9234/4999/files/16571644587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1683/8558/files/59934602124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/gasuvamekarataratogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1361/5264/files/the_liberty_bell_march.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/modijusokibil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40169505762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/96056065099.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_off000053ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53EF 5640 bytes
SHA-256: 65fe2b40ca392afda1fd8fe2fd77b089d9d323397eb220bc33cbfa14a9e5c3ca
font_01_sfnt_off00006711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6711 10528 bytes
SHA-256: b7dd8f838db84f0d02abc6812920481a7d59f913929535522443ae3384313a0b

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