Malicious PDF — malware analysis report

Static analysis result for SHA-256 2768e7744ac23d87…

MALICIOUS

PDF

73.5 KB Created: 2020-08-25 02:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6ffeea8e3e4a8f114d6e94714055b71b SHA-1: aa10fc493fa05d0bac36504563b06517828491f0 SHA-256: 2768e7744ac23d87bb8276e9a3d421088bd8c05d6d7506e9f923cfd09146871e
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, also contains this URL. The presence of a link farm heuristic suggests an attempt to manipulate search engine results to distribute malicious PDFs.

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=binomial+distribution+proof+pdf In PDF document text
    • http://files.alleghenymemorials.com/uploads/1/3/1/3/131398052/6812202.pdfIn PDF document text
    • http://files.froggyplaces.net/uploads/1/3/1/8/131857758/wazubipagatu.pdfIn PDF document text
    • http://duzimoxa.teresawriter.com/uploads/1/3/0/8/130814328/cbcec749d02.pdfIn PDF document text
    • http://files.spanishduluth.com/uploads/1/3/0/7/130738812/xivapubeluxuleb.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/1/0437/3073/1173/files/asynchronous_motor_control.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6282/7935/files/java_8_64_bit_ubuntu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/noxedenotesusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/86914338026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/49423162759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8254/6341/files/dekojodoxodugezeluduwog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6284/3797/files/wafimowezuruk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/pufopuxigafatoditemijeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9494/1600/files/799566494.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_off0000d688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD688 5376 bytes
SHA-256: 00c8eae40fd4c962350622283754378661a35badd0f692c84ed2319cf97c3242
font_01_sfnt_off0000e8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A6 15128 bytes
SHA-256: f79eed2be507e3e3f17ba461e6322d5182ef616c229ec0c0e478a20f65a0e093

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