Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f30168bb34b7fa6…

MALICIOUS

PDF

40.8 KB Created: 2020-08-09 01:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d57c3753ea0bcca0d8f9bf0cd12f345 SHA-1: a7541e2a610312374d0fcdb2a6afb1fe9eba53f5 SHA-256: 9f30168bb34b7fa6da29960da01089913b95f69f352d8025a8a180125fbf5fc8
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link identified, 'https://ttraff.com/pify?keyword=algorithmic+state+machine+pdf', suggests a redirection to potentially harmful content. The ML classifier also strongly indicated maliciousness. The document body itself is heavily obfuscated and contains metadata related to its creation, but the primary threat appears to be the extensive link farm designed to lure users to malicious sites.

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=algorithmic+state+machine+pdf In PDF document text
    • http://files.drjuliannavalearningacademy.com/uploads/1/3/0/8/130814935/mebavumubawal.pdfIn PDF document text
    • http://files.springhillmn.com/uploads/1/3/0/8/130874422/7995154.pdfIn PDF document text
    • http://files.wormfoodforthough.net/uploads/1/3/0/9/130969243/e9c22e71c4f8.pdfIn PDF document text
    • http://files.aramgershuni.com/uploads/1/3/1/3/131379894/a01dd8731a.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/1/0428/0070/9791/files/pomiritakelebotodirepexos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8722/4213/files/ubuntu_not_enough_free_disk_space.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/aspects_of_growth_and_development.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1685/5457/files/kujozikomifag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/megomububoramiwuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6383/5814/files/tularosusonibesofatepos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9037/8903/files/8762121989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3111/6448/files/8594308491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1583/8618/files/11919190626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9648/8613/files/tagimubafujolij.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6240 5556 bytes
SHA-256: 73137ff0d9fc3cfcfd0592ad8b0768504a3e6f605498fd4a02be834b440c739f
font_01_sfnt_off00007500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7500 9768 bytes
SHA-256: 3f7502e14423483ea677882206a001c3fab6ed1a7844095d67eb6c54bccd1449

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