Malicious PDF — malware analysis report

Static analysis result for SHA-256 7de80f4e142504b5…

MALICIOUS

PDF

51.2 KB Created: 2020-08-19 01:05:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8d31406316bde20ee6b65f8b2a73760 SHA-1: 24762f084cf823dd2e8b672619436699063017b6 SHA-256: 7de80f4e142504b5015962b38b638fd1378a9d58d1c4a973921ab4fab674a798
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com). This suggests a phishing or scam attempt, likely disguised as a free download lure. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the embedded links are the primary indicators of malicious activity.

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=android+adb+wifi+settings In PDF document text
    • http://vabufuru.joynorstrom.ca/uploads/1/3/1/6/131637814/e6ed38a173467.pdfIn PDF document text
    • http://files.ruthwilkin.com/uploads/1/3/0/8/130814308/0d29c6a0f3701.pdfIn PDF document text
    • http://files.roejendradesigns.com/uploads/1/3/1/4/131406762/wugagumigejo.pdfIn PDF document text
    • http://xekat.mediterranean-maudsley-forum.co.uk/uploads/1/3/0/8/130814328/soluwuwutudu_besubitoduxot_nalolazulupo.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/1/0431/0702/5060/files/bringing_words_to_life_beck.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/gezupupawaluladeneberonag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/xilodimusipawilija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2982/1602/files/cultivo_de_caucho_en_colombia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1626/3592/files/xizukabiloroketakikow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/how_i_treat_acquired_aplastic_anemia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0700/0219/files/tipomipoledul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fiwowosilikaragufes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7219/2669/files/barcelona_metro_map_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5400/files/62274246195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/854786321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3801/files/75165469726.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_off00007ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA4 5264 bytes
SHA-256: 8d50be1c0d5772adab1d2358977c746bab6d44e72293e0095e7808ce47d40220
font_01_sfnt_off00008ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAD 16108 bytes
SHA-256: 433e91bb1fa5b0b9406128cc30fe82e6eae38e7ac35e91edb91776217bfd5963

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