Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67f3dd1a91af338…

MALICIOUS

PDF

72.8 KB Created: 2020-08-27 16:11:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ea28aa2011a11fa6fd1cb3613b60364a SHA-1: de36254ae646db2c52d73ac19329c09927e13dc5 SHA-256: f67f3dd1a91af338f975da52309a16201929c92340c92db939a7fa02a6951a3e
194 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, likely for SEO manipulation or to host further malicious content. The ML classifier strongly indicates malicious intent.

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=agent+vinod+video+songs+free+download In PDF document text
    • http://files.leducfarmersmarket.ca/uploads/1/3/1/3/131397987/f8938061b6b7f.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/1/0447/9831/2609/files/bodybuilding_weekly_workout_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7496/7965/files/xeledijiweweluw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2710/2876/files/bharat_ko_jano_2020_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/31586263543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/5989/5461/files/cast_away_full_movie_720p.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8667/5109/files/xisonofivoxajobexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1239/6968/files/65650499876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90209356055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0221/5069/files/tudesazukov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/asme_turbo_expo_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8583/2096/files/reviving_izabel_read_online.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000b633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB633 5216 bytes
SHA-256: ae24afdf4fc7b3ddb8fbf8d984756d69b23e536cb1d2c11e5c11a10560e647f0
font_01_sfnt_off0000c818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC818 14756 bytes
SHA-256: 9464624619fe8101f5b0de272be0c8debc54f7219b4295414ff192b61fce2f9a
font_02_sfnt_off0000f60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60F 18948 bytes
SHA-256: f1ef4a39c11c248798ec9fd9b935b7455b71208b7d0e2a560fc05cdf25abbdd7

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