Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9c2f3fd61c8a38e…

MALICIOUS

PDF

34.2 KB Created: 2020-09-19 05:40:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8a9db7c8387fa1510b96be11fcb77764 SHA-1: 8c010d5194c74fe00c036ab4f2e85eaba79ec7c9 SHA-256: f9c2f3fd61c8a38eb8ece109fca0a1b70e3bbc2441b9e4acfa621a75b89ba5da
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying it as a 'PDF_SEO_LINK_FARM' and another flagging a link to a known malicious redirector. The document body contains garbled text but includes the URL 'https://ttraff.com/wix?keyword=daily+language+review+answer+key', which is also flagged as malicious. The primary attack pattern appears to be the distribution of numerous links, likely to manipulate search engine results or to lure users to malicious content.

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/wix?keyword=daily+language+review+answer+key In PDF document text
    • http://files.kudratforever.com/uploads/1/3/0/8/130814980/8b18e321a5c21.pdfIn PDF document text
    • http://files.splashcitystudios.com/uploads/1/3/1/4/131453615/4eb1ef3.pdfIn PDF document text
    • http://zutusawu.academicsuccessblog.com/uploads/1/3/1/1/131164250/xalepijuxuti_bexuju_semoki_ladipovefofikuk.pdfIn PDF document text
    • http://miwegabof.tracyvogtdesigns.com/uploads/1/3/1/8/131856917/11f6f97445a4e1.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/1/0431/5774/9917/files/parestesia_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/8167559618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7044/0095/files/63565354532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/45136410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3382/0322/files/ccri_by_upma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/budomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5280/0929/files/standing_outside_a_broken_phone_booth_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5570/1398/files/sengoku_basara_4_pc_game.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/autism_spectrum_disorder_review_article.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/80666083405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/heel_and_toe_polka_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/latogetazilab.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_off00004824.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4824 5168 bytes
SHA-256: 68984de5130da3a3b43ad1ce00b0b539d5a8b837dea9861a5a512acab1f3433d
font_01_sfnt_off000059f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59F3 9912 bytes
SHA-256: 061fa64b4759c3ce4b8d19ff24a0128b48f9f0da773969fce0d290392e6bb116

Open this report in the interactive analyzer, or submit your own file for analysis.