Malicious PDF — malware analysis report

Static analysis result for SHA-256 121cf13dfa7ae888…

MALICIOUS

PDF

52.3 KB Created: 2020-08-01 08:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e1b102295a64316e86f176f66a6aed88 SHA-1: 4d06fccc4710d3abeef2df5c1682efb1f23c7eae SHA-256: 121cf13dfa7ae888ab6f7c78d5072e615ac62616c11f6981a3ed3d846a2af5a4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is https://ttraff.ru/pify?keyword=magna+carta+ps2, which is flagged as malicious. The sample appears to be part of a link farm designed to drive traffic to potentially harmful sites, likely for phishing or malware distribution.

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=magna+carta+ps2 In PDF document text
    • http://files.hnartworks.com/uploads/1/3/0/8/130874533/jodoxub-fokoj-favizat-xololore.pdfIn PDF document text
    • http://files.kimdeering.com/uploads/1/3/0/7/130776167/tidegodolujiril-bogudafa-kuxev.pdfIn PDF document text
    • http://files.jsiglobalinc.com/uploads/1/3/1/4/131437725/4836894.pdfIn PDF document text
    • http://files.themindfullyscientificmama.com/uploads/1/3/1/6/131637311/1762955.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/1/0440/0388/5206/files/6765771419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1418/3323/files/gesum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8986/1535/files/16571992900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1762/4990/files/bovuvugabepofalovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2468/7014/files/how_much_does_lightweight_increase_mining_pseed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/89058396362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodujanizovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6686/5302/files/55159213193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0438/7750/files/66074854978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71482320097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/38877586365.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_off000062c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C3 10840 bytes
SHA-256: 969eb833347ff4d5c6861b5f9aea38c633b0fdb5ba3a63d3f33a2f3eeaa7b685
font_01_sfnt_off00008520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8520 5204 bytes
SHA-256: 5d7ca11134a485f75e560ca3f04536f4d4e7f54a002acc06c5146de86af3cd2d
font_02_sfnt_off000096ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96EF 14848 bytes
SHA-256: aec8c41bab7da5c7f64223df738d70c7931583b4b2bf6c7ec78fe7a398fe9df5

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