Malicious PDF — malware analysis report

Static analysis result for SHA-256 3475a801177715e0…

MALICIOUS

PDF

42.9 KB Created: 2020-08-19 03:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 12951dd4d5a57357496603a55699cf38 SHA-1: 014f59cb43a964a1a01dab0e0fa51bfa47ba3674 SHA-256: 3475a801177715e0e59aa12e08c469ae3199968b4edb0af5d76e00a5f3bb2575
194 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains a large number of embedded links. One of these links, 'https://ttraff.ru/pify?keyword=bible+apk+pro', points to known malicious redirector infrastructure. The document body contains garbled text, but the presence of numerous links suggests a link farm or redirection attack designed to lead users to malicious content. No scripts were extracted from this sample.

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=bible+apk+pro In PDF document text
    • http://files.letrim.com/uploads/1/3/1/3/131379301/92bec98f0.pdfIn PDF document text
    • http://files.eastafricanscholarsfund.org/uploads/1/3/0/7/130776718/vemofuva.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/1/0438/1566/5826/files/bratz_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/julugonirovipamipilezipez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5404/7137/files/1265996123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8272/5029/files/rutowutajefaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/begevegibapobigenafibux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/knock_out_drum_sizing_spreadsheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3138/6517/files/ic_86_risk_management_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/bihar_tet_2020_english_question_paper.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_off00005e15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E15 4888 bytes
SHA-256: 33d3b5752ee2e0cf90e09c71b4203662b22847c9e85796de4468e8c4c825392d
font_01_sfnt_off00006ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC1 15732 bytes
SHA-256: b6fd8eea22c533ca114912e3f6641387dac38785cc776ab26beea98e1581ff1d

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