Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d08b1aa49d7199…

MALICIOUS

PDF

35.8 KB Created: 2020-08-10 15:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3ac05e12aea71ed6073a21791dbd605 SHA-1: 0d2d292ab723b4da10dadb136e1b5761ebe4b37a SHA-256: a3d08b1aa49d7199be5435112e1e0188674e2a30978857699e281a520576cf8f
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, a technique often used to create link farms for SEO manipulation or to redirect users to malicious sites. One of the primary URLs, 'https://ttraff.ru/pify?keyword=bestiario+mexicano+pdf', is flagged as a known malicious redirector. 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.ru/pify?keyword=bestiario+mexicano+pdf In PDF document text
    • http://files.wrosephotography.com/uploads/1/3/1/4/131406412/76eca58.pdfIn PDF document text
    • http://files.leenaceraveeni.com/uploads/1/3/1/4/131408899/479c0c09e7.pdfIn PDF document text
    • http://roxonug.greengateolivegrove.com/uploads/1/3/1/0/131069839/pulesifi.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/1/0432/0549/2904/files/jepakazejokejixesezeziwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8231/files/52819467495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/catia_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/62252725458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8198/0321/files/behold_the_lamb_of_god_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/67220990376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/kemesotudugewapafeniwevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4283/1522/files/bilati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8053/8529/files/basedenagoramarijojud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/46504570083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4926/8886/files/75126517473.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/52072611536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7848/3097/files/35216659609.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_off00004dbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DBD 5384 bytes
SHA-256: b4bb8f864c8ea3dae67734bdcac08e97da013d70c41f51b77f2049cd05e3ff81
font_01_sfnt_off00005ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFD 10652 bytes
SHA-256: 0de31ae04d55892875151a9ebeef929562a7607099db1379ad9ddc01d922a85f

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