Malicious PDF — malware analysis report

Static analysis result for SHA-256 75855d996900216f…

MALICIOUS

PDF

55.1 KB Created: 2020-07-29 13:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38b992272b66f71cc7deaa9b65529e3d SHA-1: 5918c0835e4e29cc03319ba59b8a29e1eb628ee9 SHA-256: 75855d996900216fcc2e3bff46c685e62d5a6a6b10c6bce269dac6855eb63ccd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external resources, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to academic research proposals, likely intended to trick users into clicking malicious links. The presence of many PDF links and a malicious redirector indicates a link farm or phishing campaign.

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=academic+research+proposal+example+pdf In PDF document text
    • http://files.ironthong.com/uploads/1/3/0/8/130814652/f4f78881b4aa.pdfIn PDF document text
    • http://files.mytayloralexander.com/uploads/1/3/1/4/131406885/5652258.pdfIn PDF document text
    • http://files.remembermequiltguildbr.com/uploads/1/3/1/3/131380848/fenububajul.pdfIn PDF document text
    • http://files.kelseyshapira.com/uploads/1/3/1/4/131437792/sadijeno.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/1/0433/0687/7080/files/nenipuwewof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/doluwukiwarujuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/36563445229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0397/6614/files/99850410332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/88094091283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7256/1050/files/banikubosetozefibakojezad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/wimuratudipewizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4188/2265/files/58557234942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/jafuronepop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0413/9416/files/55800999763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2141/0210/files/44802996044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/tajafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2359/6693/files/76732163495.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 5

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_off00009b3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3A 5052 bytes
SHA-256: db5033565f0563dab8bd976309d38b84bcfc5f014c15b4da0c0860deb22d64a3
font_01_sfnt_off0000ac5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC5E 10088 bytes
SHA-256: 0388fa2aeff17818fc8bb3e69cdec79ba6f5027560a09e6170b9f43bd0e4b955

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