Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e6ed87f3f82542f…

MALICIOUS

PDF

45.4 KB Created: 2020-08-20 13:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 44361a162c689281ef0230ab7b7bb035 SHA-1: c8c25ded7c4eecb4e68f8f499b1c5a5c0612e7f2 SHA-256: 9e6ed87f3f82542f68149a63dcee8ce86f1f4bc7facc75a33f120cd41c054b07
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, includes the same URL and appears to be a lure related to learning Japanese. The presence of a link farm heuristic further suggests a malicious intent to drive traffic to potentially harmful sites. The file is generated by wkhtmltopdf, a tool often abused for creating malicious documents.

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=apprendre+le+japonais+facilement+pdf In PDF document text
    • http://files.elliottmilesmckinley.com/uploads/1/3/1/8/131871466/a173e.pdfIn PDF document text
    • http://kedik.bringitonline.in/uploads/1/3/2/8/132814500/gopimet.pdfIn PDF document text
    • http://files.sanluisrestaurant.com/uploads/1/3/0/7/130776433/pisuxikipunebuw.pdfIn PDF document text
    • http://dujifom.corkscrewcollectors.com/uploads/1/3/1/6/131637316/mimibeluvusubidome.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/1/0435/0479/5800/files/litotenevavaweletosirugad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/dibujos_colorear_animales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pujipipokumamidepuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5950/1464/files/disconformidad_alta_medica_inss.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/31404310950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/jobov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/73573359078.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/xakagivenonoraw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/74079186987.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000619b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619B 3784 bytes
SHA-256: 8d9bcc24984b78e084c38877a24415254f263f62f2cfb4eb2f26a4fb88cb3449
font_01_sfnt_off00006f0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0E 5368 bytes
SHA-256: 14cf75132f14f05054cb5cc598abedc5ce4fdfc80b992cfc214c327e2a2cec83
font_02_sfnt_off00008138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8138 12076 bytes
SHA-256: 30c7c99705b89d87227bb8e83a735ecd3eb1c81ba45b2b35a8c05dc31367d0aa

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