Malicious PDF — malware analysis report

Static analysis result for SHA-256 f79a1270c5c758a7…

MALICIOUS

PDF

42.8 KB Created: 2020-08-20 22:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99e5e82730f2754e859a9e81b5c099ff SHA-1: f715f7de544e9e492ba98385f5b9b56ac109552d SHA-256: f79a1270c5c758a74c44f710af645fd8c9f463cb9b65c50442896275c383375e
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.com/pify?keyword=blaggers+guide+to+art'. This URL is embedded within the document body, suggesting a social engineering lure disguised as an art guide. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to benign Shopify URLs, likely for SEO manipulation to increase visibility. The ML classifier strongly flags 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.com/pify?keyword=blaggers+guide+to+art In PDF document text
    • http://files.drumartist.net/uploads/1/3/0/7/130738928/5267337.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/1/0438/5816/5925/files/tanka_poetry_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/60102322798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/49110982712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7930/2296/files/91917882592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9141/7505/files/63144098154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4003/7271/files/40523971459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6808/7717/files/25328121317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3602/4737/files/zaeed_mass_effect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4857/4884/files/meaning_of_language_acquisition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/polyatomic_ions_answer_key.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 2

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_off000069b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B2 5044 bytes
SHA-256: 686031fb27c8ea5f482b9cf499291981f042ec74f709660cb36d61c301172174
font_01_sfnt_off00007ae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE4 10420 bytes
SHA-256: 20d0971fd58fe0d2783084a97d042fc9347dff8a057106a6ea27d59fe070497d

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