Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dcf218fcf8539f8…

MALICIOUS

PDF

43.3 KB Created: 2020-08-14 11:19:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa0d70bdf5faa6bbbb8d6392b2fcdb83 SHA-1: 8606b389ffe15526562bfd88a9bfa3ef66dd7425 SHA-256: 8dcf218fcf8539f82d82525b70ad087205b2981e88b10e5727db1d6719ef9efd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on ttraff.ru. This heuristic, combined with the ML classifier's high confidence, indicates a malicious intent to redirect users. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=company+profile+design+template+word+doc, suggesting a lure related to company profile templates. The primary malicious IOC is the redirector URL.

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=company+profile+design+template+word+doc In PDF document text
    • http://files.aldonelectric.com/uploads/1/3/0/7/130739095/dirivagip.pdfIn PDF document text
    • http://files.countyparkfriends.org/uploads/1/3/0/8/130814279/zobisulit_selitiga_sojinotavom.pdfIn PDF document text
    • http://files.amyspetsitting.co.uk/uploads/1/3/2/7/132741144/6971823.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/1/0434/9915/9718/files/jojisekediletelafumod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/molaxupizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/55003536979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81256704061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/application_letter_sample_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4121/6929/files/antitrust_2001_full_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8507/7405/files/72215362666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4529/6027/files/adjectives_of_character_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9108/6750/files/cam_ron_pink_fur_coat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8693/6219/files/whirlpool_dryer_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2275/6503/files/gexaxevipinejuditaxofir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/xiruwivakubalobudatojo.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_off00006a27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A27 5572 bytes
SHA-256: 1d798c3291e08cc4ee95f32e423fc90c5ba6cc0a8a9a9e99c875b99c4113bdb7
font_01_sfnt_off00007d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D18 10376 bytes
SHA-256: 1c526cddedfe1576a811f3ebf8857ddb3e3e4b69f7c5453e3404402b42c7f847

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