Malicious PDF — malware analysis report

Static analysis result for SHA-256 c266621975f13bc7…

MALICIOUS

PDF

43.7 KB Created: 2020-08-06 21:42:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad2f170d22c5cec71fd341766738a789 SHA-1: 2cf57d3963fc5279d00d0aa14554f3c3cead94b5 SHA-256: c266621975f13bc7f8b944a3a0a11b7a92679536104bbe7588956f72edd18095
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector link to 'ttraff.com'. This indicates a likely phishing or malware distribution attempt. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the analysis of specific payload delivery mechanisms.

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=cariotipo+pdf+unam In PDF document text
    • http://files.marvinleblanc.com/uploads/1/3/2/6/132695306/wavozolemima-jiwutuxaba.pdfIn PDF document text
    • http://files.thegoodsnh.com/uploads/1/3/2/8/132815924/ca90e6ffc7.pdfIn PDF document text
    • http://files.istagesydney.com.au/uploads/1/3/1/4/131438059/sowogeke_genuxovetivuze_datefovolipu_dijef.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/1/0431/1020/3556/files/51280968594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2230/3911/files/office_mac_product_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/6111551223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/99380081086.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/57109884959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0414/8382/files/mipexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6434/5247/files/2564416252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/48085238943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/zuwabelawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/wezelobaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1914/9216/files/tutep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1698/5498/files/dark_souls_minecraft_skin.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 4

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_off00006ca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA5 4880 bytes
SHA-256: f4a0b2120e32c854ac29c9d5646514565775171579a3470e0cf79ad6f4160e86
font_01_sfnt_off00007d2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2D 10936 bytes
SHA-256: 58dff11d4f702e0b2026abbddeca4590f6f209ee6ecbeaa3f58cf3f434b0e069

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