Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9377a961471e747…

MALICIOUS

PDF

36.4 KB Created: 2020-08-04 00:27:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80d5b42d0aea77acaceb4a0065551eea SHA-1: ce3b00f62ed72f77818570b7f244a44d99c27eb8 SHA-256: a9377a961471e747538f7485add61f154acc6803a2963408693bb94b5ffbfbf4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-Override

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious redirector.

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=statistical+data+mining+using+sas+applications+pdf In PDF document text
    • http://files.robertsonbookreviews.org/uploads/1/3/2/3/132302963/95b71dc93406cb.pdfIn PDF document text
    • http://files.thewaveinspired.com/uploads/1/3/2/6/132695543/f0f118e88a447bb.pdfIn PDF document text
    • http://files.mamatgear.com/uploads/1/3/0/7/130775245/resatid-kenetanimaxada.pdfIn PDF document text
    • http://files.kckcconcepts.com/uploads/1/3/1/3/131380871/nigozesudutavigamo.pdfIn PDF document text
    • http://files.audiblethought.com/uploads/1/3/2/7/132712093/moworina.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/1/0433/7804/9189/files/towesogisugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/60721695691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/12428343807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5580/7640/files/92903155285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/interval_notation_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/nuzoladelakojireputaxadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3623/8236/files/soletalerixirav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2769/2695/files/8921856852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1624/1831/files/the_apology_of_socrates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4021/9041/files/item_ids_pixelmon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7485/4812/files/broiler_chicken_rearing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/domekowag.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_off00004ff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FF4 5480 bytes
SHA-256: 791682bc4b861400234b176101aaa67767219bbf70637af297b2d1bebadd6fce
font_01_sfnt_off0000628b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 9880 bytes
SHA-256: adfde1a8b61e7cc05229315a0609a3c408ffa4b01aea5e892797659c0ea5ec80

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