Malicious PDF — malware analysis report

Static analysis result for SHA-256 6795d65aea5b8385…

MALICIOUS

PDF

52.3 KB Created: 2020-08-05 06:47:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4c16d2687af9ae7965596d8d1663e20 SHA-1: 6ce3a8c8cae9d54e42c8d5fb9b357063fe1de1b4 SHA-256: 6795d65aea5b8385c37d5013aa34a8815c20a463dc895a89d1e8074229022e46
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though partially corrupted, includes the same redirector URL and appears to be a lure for a free PDF download. The ML classifier strongly indicates maliciousness, and the presence of numerous SEO-optimized links suggests a phishing or scam campaign.

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.cc/pify?keyword=advantages+and+disadvantages+of+sexual+reproduction+and+asexual+reproduction+pdf In PDF document text
    • http://files.biljohnson.com/uploads/1/3/0/7/130738752/202044.pdfIn PDF document text
    • http://files.graceandtruthec.com/uploads/1/3/0/8/130874055/wipizerumupu.pdfIn PDF document text
    • http://files.dragonfirestore.net/uploads/1/3/0/7/130739253/826469.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/1/0441/4029/8392/files/tosibewudegokalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5516/1252/files/viwajokavizujasoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/zogokoteg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/45343514065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5609/4615/files/jifizuzaninogimoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/siroxerexomukopurubav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1641/9488/files/apologetica_catolica_purgatorio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2675/7270/files/sudajavuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/wufinilamimikenevotogep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8690/9341/files/spring_batch_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/4552557057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0839/2353/files/terminal_commands_mac_cheat_sheet.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_off00008c75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C75 5440 bytes
SHA-256: b44e0d8a4f452cf006978f11a742dec89d12f90f38e14a2e004f0f1cf414ff2d
font_01_sfnt_off00009f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F17 10636 bytes
SHA-256: efa6f65a0b2046c75a99a4cba5cbafda1c84f64f20ad28bb3012ee4d4b1bc8aa

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