Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c85d78079d4592a…

MALICIOUS

PDF

45.3 KB Created: 2020-08-24 03:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a581ac77f7c34d0b92a8606379b6f171 SHA-1: dd106074c80271a7a2d3237aabacf1a35a358598 SHA-256: 2c85d78079d4592a646f6c48ba62add48bbbec846103dab6f1b851324579fe8b
194 Risk Score

Malware Insights

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

The PDF contains a direct link to a known malicious redirector, ttraff.com, which is disguised as a download for a popular game. The document body also contains this URL and other links to PDF files, suggesting a link farm or redirection strategy. The ML classifier strongly flagged this PDF as malicious, and the presence of a malicious redirector indicates an attempt to lead the user to a harmful site.

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=dota+auto+chess+app In PDF document text
    • http://files.blackstrait.com/uploads/1/3/0/9/130969241/nazizigafev.pdfIn PDF document text
    • http://files.bandofcovers.net/uploads/1/3/0/7/130775727/kivovaruvosofi-kugisuloxurogik-tezut.pdfIn PDF document text
    • http://pewebuma.annawinkowski.com/uploads/1/3/0/8/130874317/8f128b697c6cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/85374776680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9588/2918/files/download_nes_roms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/pumpkin_template_scary_face.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/1551162205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7453/6103/files/cinema_4d_tutorials_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/50354794552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9572/7007/files/55546150265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/turob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0108/4064/files/mojujojinode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2040/0286/files/39970867817.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6795 4620 bytes
SHA-256: 284e3c96c8617497625e25da497d06db7e72b9cbc0737b0800092551c2d86df9
font_01_sfnt_off0000775c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775C 10216 bytes
SHA-256: d66ba81c02d3a55bd57927bfc6b8d2243033d4efcf44c891f0663a0b1d2d2246
font_02_sfnt_off00009a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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