Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd6c020fc1650405…

MALICIOUS

PDF

43.9 KB Created: 2020-08-13 04:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95003e0a3a15e4e4eea7bd7de56c1318 SHA-1: d1b3897a8993ba45f38d3fec907453420e6338b7 SHA-256: fd6c020fc1650405cbec7c3d36c0e846b14ced96aeaebf5967628bab028c0d5b
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=assessment+of+communication+and+interaction+skills+acis+pdf'. Another critical heuristic identifies this as a PDF link farm, with 28 external PDF links detected. The document body, though heavily obfuscated, also contains the same malicious redirector URL and several benign-looking Shopify URLs, suggesting a lure to a malicious 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.cc/pify?keyword=assessment+of+communication+and+interaction+skills+acis+pdf In PDF document text
    • http://files.mullermgt.com/uploads/1/3/1/3/131379395/1050696.pdfIn PDF document text
    • http://files.pellikancportfolio.com/uploads/1/3/1/3/131381095/e8f4b.pdfIn PDF document text
    • http://files.kbesq.com/uploads/1/3/2/6/132681392/542691.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0429/4865/7318/files/monosulijanadudumolinak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1725/4565/files/the_secret_bankers_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1906/7815/files/sumoruledidaluteka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0635/9714/files/safowasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/xibasaxej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4189/7113/files/bavapeloxitujegejofipimil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/rofilefebupepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2446/3525/files/29668360759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6444/0472/files/marakisuwomusevesiwune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1452/0995/files/lawakefamuxokuzufonejibil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2846/1206/files/88789913879.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_off000064db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DB 1696 bytes
SHA-256: c80b935bb2e72fbf0bb54bead4dcf673e2ee9ff5a06d35ab91e29c0786333a85
font_01_sfnt_off00006d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D05 5356 bytes
SHA-256: f59506ef54bf03c840fba590ba46b060e1f796fccd5d86b1d02ef6df416ec0e6
font_02_sfnt_off00007f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F24 10168 bytes
SHA-256: f39482f4f161f91a2ae80f8e1766573fa27394c2d3ab683109b04d344a72b9dc

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