Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b80f171d7e16d07…

MALICIOUS

PDF

39.6 KB Created: 2020-08-20 06:25:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd60d6ad5a10de0f89771a5f40eb4095 SHA-1: 11c08ad69243b30b0ae6c75efadd92b8e88d7632 SHA-256: 9b80f171d7e16d07b29d73b1ade650bc98ce5435d391c4f4fc474669266315d2
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to 'free birthday card template pdf' and the malicious URL itself. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination and potentially improve search engine ranking for malicious content. The ML classifier also strongly indicated maliciousness.

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=free+birthday+card+template+pdf In PDF document text
    • http://files.covefiinvestments.com/uploads/1/3/0/7/130775062/e375c74.pdfIn PDF document text
    • http://files.emeastrategy.com/uploads/1/3/0/7/130775154/9961914.pdfIn PDF document text
    • http://files.castleworksmotorsports.com/uploads/1/3/0/7/130775490/bopezoj.pdfIn PDF document text
    • http://files.distelfinkcrafters.org/uploads/1/3/1/4/131437291/8345954.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/1/0439/1088/9624/files/48427765440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/18466621949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4407/7722/files/temetozoviminup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/73932526365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/panasonic_lighting_catalogue_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/66252961063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2629/2634/files/cancer_de_prostata_articulos_cientificos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/adb_install_apk_error_device_unauthorized.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/28256425722.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_off00005c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1B 5412 bytes
SHA-256: 7beca29d31f238e5280cb85cbbe0a1768a7771ddc659b355c8419c23cd515d95
font_01_sfnt_off00006e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E63 10332 bytes
SHA-256: acf5e37b8aaddc7af9e4320b746c4448127edba37409271b3fe9e83173571f4b

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