Malicious PDF — malware analysis report

Static analysis result for SHA-256 134966db4a1cafdc…

MALICIOUS

PDF

45.8 KB Created: 2020-08-20 21:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74f7e4708c3c6a6f353a0c812bfe5bb1 SHA-1: f2df17feac8eb073d85c2418966b85f860f81636 SHA-256: 134966db4a1cafdcc20f93b65707b2251fc228b14833c6ddb318c7cda5458bfb
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) disguised as a 'phd student cv template'. This suggests a phishing or scam attempt designed to lead users to malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links reinforces this assessment.

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=phd+student+cv+template In PDF document text
    • http://files.pawcrazy.org/uploads/1/3/1/3/131380440/4058577.pdfIn PDF document text
    • http://files.francesca-williams.co.uk/uploads/1/3/0/7/130740521/wesuxavux.pdfIn PDF document text
    • http://files.northchannelnetwork.org/uploads/1/3/0/7/130775828/fawojajikuzonid.pdfIn PDF document text
    • http://joxiv.trinitylutheransd.org/uploads/1/3/0/7/130738870/tenawowerogim.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/2499292058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/sheikh_abdul_qadir_jilani_books_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/android_4_movie_720p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5463/6966/files/22518904565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3485/4051/files/21899551917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7930/1275/files/kubonuwagurosagirik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9358/1212/files/breeders_cup_past_performances_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6827 5004 bytes
SHA-256: b7466954c4e516a41f811ef393ba56924a784b814ab2feaca562fad8fb75634f
font_01_sfnt_off000078fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78FA 10536 bytes
SHA-256: cdfbbbd2b19bfd45895ddd4b82cf1f82595a1072ec5cbeee7b09a3473771c37c
font_02_sfnt_off00009cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEA 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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