Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f59ff0280f9b716…

MALICIOUS

PDF

45.2 KB Created: 2020-09-10 01:57:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c76e807db90b83776a8c1d99e7beeb20 SHA-1: 45fe130a5143ff78fb83763b1a49f5d756a8ee16 SHA-256: 9f59ff0280f9b71673a58e945c0edad17eb372e4cd244e59dafcc0c11051462a
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a link farm designed to obscure the ultimate destination. One critical heuristic identified a redirector link to 'ttraff.club', which is known malicious infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to lure users to malicious sites. The ML classifier strongly supports the malicious nature of this PDF.

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.club/wix?keyword=world+countries+and+capitals+pdf+free In PDF document text
    • http://moben.georgektan.com/uploads/1/3/0/7/130739113/gewidoj.pdfIn PDF document text
    • http://files.studyguidelive.com/uploads/1/3/1/4/131437702/372383.pdfIn PDF document text
    • http://files.sewchicinteriors.com/uploads/1/3/0/8/130814192/ligot.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/1/0434/1052/2277/files/botez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6563/files/similanikuzurolonazeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2332/files/coreldraw_graphics_suite_x5_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/acuerdos_de_paz_1996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/4340/6233/files/tabalivufonubidek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1740/4573/files/babugoxepoxafusonabifunup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0970/9976/files/businessman_3_ringtone_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2729/8461/files/7056575493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8741/9805/files/11704419896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/86826918182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/bonofowofuwurubipa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000658f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x658F 5044 bytes
SHA-256: 66f103a47b53faf8790b9243a4b712671c57cbfd3b6506e795b4dbd5c22a5ce9
font_01_sfnt_off000076cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76CC 10252 bytes
SHA-256: 54dc6be8bf9648a7657086e334f01cf23b1310760a3b57154559df18a7dfe4f3
font_02_sfnt_off00009995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9995 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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