Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b9d9975d32ee2a…

MALICIOUS

PDF

45.2 KB Created: 2020-07-31 13:56:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab5636f764b68cedca526817a7d7031c SHA-1: 38ae37520ea722cb4d8c27b70ace15745a6bafc0 SHA-256: 03b9d9975d32ee2a98a1fe7ad444ece2046f399a07ba26d29a25b7eea09e2fc1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple links pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'artist biography pdf'. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy likely designed to attract search engine traffic and distribute malicious content. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=artist+biography+pdf In PDF document text
    • http://files.aspendivas.com/uploads/1/3/1/4/131407388/6e884.pdfIn PDF document text
    • http://files.tcmphoto.com/uploads/1/3/2/7/132740873/regaputukem-dopura-fofojapozigu-narekaxapipiwe.pdfIn PDF document text
    • http://files.htschool.net/uploads/1/3/1/1/131164479/7806161.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/1/0431/8402/9854/files/togapulimofosasomel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/soradediwusezap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3563/files/58434727241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/jilupifolivotomuwufadov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pejuzesuloroxutebed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1466/8959/files/4765098842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2057/3082/files/rinupegoxuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7353/6149/files/woxusemazugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/dosakijirabavomezazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4046/4281/files/76043908900.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 3

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_off00007474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7474 5068 bytes
SHA-256: 5f9e805b45b20903a2118568520d207160c4ecb9873da1b99dff4a67764a8068
font_01_sfnt_off000085c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C4 10052 bytes
SHA-256: 516e19a6cc8493156f7d73fce0fe1fa3b4ba6702bd5e049da2569829037bb82b

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