Malicious PDF — malware analysis report

Static analysis result for SHA-256 21e1de7f0e913846…

MALICIOUS

PDF

52.1 KB Created: 2020-09-02 04:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d5e036c128af5f12af5bf510d598f6d SHA-1: 4418bd8e440dbc80f79745eafe3d703b812046df SHA-256: 21e1de7f0e913846f7ce536414dcc94bf738370cf79cf1ec8367e083b367c9db
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=aol+verizon+email+settings+android'. This indicates the document's primary purpose is to lure users to a potentially harmful site. The presence of numerous other embedded links, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=aol+verizon+email+settings+android 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/1/0428/9452/4579/files/38726317932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1842/6267/files/atomic_habits_by_james_clear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/wepevulagadat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5932/2773/files/36808583807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7261/8657/files/windows_10_cleanup_script.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ad2ade_00c2e7ff23ff44e9afb2b858db8ae22e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_ca90cdc4ee4248cb9a02fae74eff77a1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b0c717_b19291ecfe3a4793a949ee80aa905473.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/c8a981_c992470f9cb84915bc1e52518cf0585b.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4136/9761/files/wooden_boat_building_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4915/5740/files/pure_imagination_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/tafojimod.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00007842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7842 5244 bytes
SHA-256: 32a0b2b856be2da40ad8e9f0fc628679bfdd703c942ce50888fba5fc3e0ad038
font_01_sfnt_off00008a09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A09 10624 bytes
SHA-256: a85be5c2e41c80c43f017c504358526f30f1efdb7d621a5848d15529336604db
font_02_sfnt_off0000aea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEA3 16088 bytes
SHA-256: 700ff7bf493bf9bab5e7bd19ce07725d6ad682c9ec1bd4c381fbd4d74ba1924a

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