Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67201a3c4c20761…

MALICIOUS

PDF

35.5 KB Created: 2020-08-05 14:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c92e97570aed559604cb1657f92673a5 SHA-1: 3b2cffe85f56db73d3db96bea72d244ad26a2077 SHA-256: c67201a3c4c207615b262d3afe995a4ef97e1394a82bed202dcab99f24cb63d2
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at ttraff.cc. The document body, though partially garbled, contains text that appears to be a lure for a book title, which is then linked to the malicious URL. This suggests the PDF is designed to redirect users to malicious content, likely for phishing or malware distribution.

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=mathematics+for+economists+by+taro+yamane+pdf In PDF document text
    • http://files.artandroulla.com/uploads/1/3/1/3/131380773/6e51b943ebb202b.pdfIn PDF document text
    • http://files.perfectlyimperfectcollegian.com/uploads/1/3/0/7/130739069/dobironefivonisalu.pdfIn PDF document text
    • http://files.newworldwineshop.com/uploads/1/3/2/3/132302814/zijujogopifibu-kiniletipunip-zoraxasiwalewam.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/1/0434/7019/2805/files/nisaxupej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4077/5064/files/winogewixomowetimax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8738/1155/files/jaxokomerugejoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8769/1925/files/judigenawog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/14663335336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/24638027316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2674/files/59960298039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4494/4542/files/2007_polaris_sportsman_700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/97743021074.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_off00004b95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B95 5608 bytes
SHA-256: 7e4b003f302018e58ba28f4b69b30e6b85ac775e46865c7ccf78e5865353bd53
font_01_sfnt_off00005e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8D 10184 bytes
SHA-256: 7e4f84aa6aae91b48b3e13d77a6592d96a8bd315dd8aa992dc1c87f3a982e83d

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