Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a5f43a0cea3eef4…

MALICIOUS

PDF

55.8 KB Created: 2020-08-12 08:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa3de104dc37b8d860a02768531eb738 SHA-1: 58b00cab89ede505825cfb4e65f828c2e61b93b8 SHA-256: 6a5f43a0cea3eef423727fee95c25851dcac8ef080c7b978c173cf97ff4f625f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains embedded links that redirect to malicious infrastructure, specifically identified by the 'ttraff.com' domain. The document body, though heavily obfuscated, contains text related to 'upsc exam pdf' and the malicious URL, suggesting a lure for users seeking exam-related information. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm strategy to distribute malicious content. No scripts were extracted, but the primary attack vector is the redirection to a malicious URL.

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/wb?keyword=about%20upsc%20exam%20pdf In PDF document text
    • http://nofufi.astiquesalon.com/uploads/1/3/1/1/131164250/8772431.pdfIn PDF document text
    • http://files.e-learninginteractive.com/uploads/1/3/0/8/130813461/118182.pdfIn PDF document text
    • http://files.ptccommunitygardens.org/uploads/1/3/1/4/131437845/xavoza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2783/0696/files/beledazuporabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4276/5991/files/laribototikejapod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9254/8515/files/spines_fire_brute_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/54484245103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/23103052322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3137/8592/files/rokopakisibenuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8856/7706/files/ge_profile_arctic_refrigerators.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8080/1701/files/48980342746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/lefepepet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6811/3574/files/factorio_purple_science.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FA 5100 bytes
SHA-256: 56b5e8e547315066713eebdd46199398483d66679e19dee276281850bed9ccb4
font_01_sfnt_off00008b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B56 10408 bytes
SHA-256: 941774a7bcfce85e42a6c1066544df159d9b02ef4ca55de0415204c4bc2fb9a9
font_02_sfnt_off0000af3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF3F 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
font_03_sfnt_off0000c454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC454 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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