Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a3b245ec79ac10…

MALICIOUS

PDF

57.6 KB Created: 2020-08-20 11:49:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 617ed50a06a8ef73c136eb0310bcb5c7 SHA-1: 8b58edcb5220048a4af7af1d2a4fb8dbbf674199 SHA-256: 02a3b245ec79ac1090d2e0f83921e86a030fd6befedc1bc8ad3c6414fde1fcc5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, also contains this redirector URL, suggesting a phishing or scam attempt. The ML classifier strongly indicates maliciousness, and the presence of a link farm further supports a malicious intent to redirect users to harmful content.

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=home+swimming+pool+maintenance+guide In PDF document text
    • http://files.meganhealymusic.com/uploads/1/3/0/7/130739318/9063159.pdfIn PDF document text
    • http://files.huntersvillelawyer.com/uploads/1/3/0/8/130874042/moradivege-gesinokazo-jefufow.pdfIn PDF document text
    • http://tanigane.slgtc.net/uploads/1/3/2/7/132710563/9089176.pdfIn PDF document text
    • http://files.ememathshub.org/uploads/1/3/1/4/131438477/waralabe.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/1/0434/5187/5481/files/17634343789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7786/1527/files/que_son_los_antimicoticos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3773/6603/files/50757657524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4079/8885/files/fusionner_deux_adobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4985/files/xeforitikofajotuxisafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1359/3499/files/39099047971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4558/4033/files/45409637701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6142/5814/files/33928313085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6621/2003/files/30370756502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/d_d_3._5e_player_s_handbook.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_off0000a273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA273 5348 bytes
SHA-256: f15f42759aa99759a7ce5052fdd3b5bf39a15e2c4a9c3f4343fae70ce8b2a789
font_01_sfnt_off0000b4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4A7 10932 bytes
SHA-256: 2ba2e565f3658661b32e8090dbdabd44682cfc85dbf90d3948b403b415769071

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