Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3f78a0b77038be…

MALICIOUS

PDF

64.2 KB Created: 2020-08-06 09:39:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 22bb106195c1ee5db65490bfb8928332 SHA-1: 7feed09b169057e236518c164656e9f2112793e6 SHA-256: 5d3f78a0b77038be4047f4752c54bba92f46da4dcd485e45ac94892782b906e5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a phishing or scam attempt to lure users to malicious content. The presence of a large number of PDF links and a malicious redirector indicates a link farm or SEO poisoning tactic.

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=fundamentals+of+economics+ignou+pdf In PDF document text
    • http://files.artitudemarty.com/uploads/1/3/0/8/130873728/3270096.pdfIn PDF document text
    • http://files.sabinalazarz.com/uploads/1/3/1/8/131856330/3790127.pdfIn PDF document text
    • http://files.kauaimusiceducation.org/uploads/1/3/1/3/131380308/likawubed_salujejigedor_koseji.pdfIn PDF document text
    • http://files.chardoncommunityactionteam.org/uploads/1/3/2/6/132681479/gokosifapox.pdfIn PDF document text
    • http://files.mindfulmamayoga.com/uploads/1/3/1/3/131383456/9475299.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/1/0432/2649/7182/files/xipuwiruwadifajopig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/adeste_fideles_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1903/3000/files/jojawefegok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0318/2231/files/walker_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1229/2767/files/jisamugitifekulalamoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1935/2740/files/56091473271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3839/9912/files/67448186420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7679/4008/files/labanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/tijapefileba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4046/3255/files/xugiraroribetasumeravot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/temple_of_elemental_evil_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/36507324301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/rigadogir.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_off0000bf1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF1A 5332 bytes
SHA-256: e83448f4d058be10ffa58eb8458133628b9dbf9f8386caed120e969668d63959
font_01_sfnt_off0000d138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD138 9972 bytes
SHA-256: 2cfe8742550b4c5c22f07e1e76cf81fb902a0232d4f643338c04c098b694eee0

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