Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae51f21685fc05e0…

MALICIOUS

PDF

39.9 KB Created: 2020-08-12 15:23:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f02167d0bce57439b4f943be584e7f5 SHA-1: 87f0fdd8c6d9763ab82f0bfe6e3b3705ef6c8280 SHA-256: ae51f21685fc05e09e57c1aa8e51b735145941bf020955b0a86eaba4441894c9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link to 'ttraff.com', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=pre+calculus+12+textbook+pdf+alberta', suggesting a lure related to educational materials. The presence of numerous Shopify links, while some are benign, contributes to a link farm pattern, potentially for SEO manipulation or to host further malicious content.

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=pre+calculus+12+textbook+pdf+alberta In PDF document text
    • http://diposut.plainsedgechiropractic.com/uploads/1/3/1/4/131409090/9597736.pdfIn PDF document text
    • http://zinaxu.northcountrypress.com/uploads/1/3/1/8/131871721/fuwomadabeg-pegidifi-sodaxoboxawo.pdfIn PDF document text
    • http://files.strongerdaybyday.com/uploads/1/3/1/6/131606335/tudawow.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/1/0433/4521/5656/files/41768072628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12584167006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/10473407175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/kuguwidedogafef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7707/4086/files/relox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/geography_book_by_khullar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/savovavituxibugum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8782/1984/files/fafizobalusaxilulol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5762/4726/files/send_text_message_from_gmail.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/kirajugabugapivubedukupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5029/5708/files/solving_algebraic_equations_grade_8_worksheet.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_off000053b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53B3 5604 bytes
SHA-256: 62639583653e8df43988d7b7d2e89201af9fa42bc007865ba26a3c8b52c12e52
font_01_sfnt_off000066d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D0 13864 bytes
SHA-256: d660673b14804e1c644308b35a4ab8a7a4231a95b253dec8102af404e9c591f0

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