Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5608e8e69bd2f25…

MALICIOUS

PDF

572.2 KB Created: 2020-08-07 03:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6aec4b0220ccc0221af96208034ff9aa SHA-1: f16348babfac333e0e9be6d5ccee0d99202962ef SHA-256: b5608e8e69bd2f257f3192340ffa9e26eb34c4bda81fe717a64c5fe0565a6f17
134 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it's a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=grade+12+mathematics+textbook+pdf+free+download'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to potentially harmful content under the guise of providing free educational materials. No scripts were extracted, limiting further analysis of execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9666

Heuristics 4

  • 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.
  • 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=grade+12+mathematics+textbook+pdf+free+download In PDF document text
    • http://files.premiertruckparts.ca/uploads/1/3/1/8/131860204/tezofinimaxuka-nirafetobe.pdfIn PDF document text
    • http://files.tnooyi.com/uploads/1/3/1/4/131483083/d796050628.pdfIn PDF document text
    • http://files.peppahead.com/uploads/1/3/0/7/130740563/ximojot.pdfIn PDF document text
    • http://files.ibstudyskills.com/uploads/1/3/2/6/132696263/vopajuwe.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/1/0434/7074/9856/files/mitususapunipefoxukujepuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6521/3079/files/26808115891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3504/9640/files/92387877618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3048/5915/files/wovid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7306/1532/files/wipuxufepetakux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/relegexitibojerurelowuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/gitaxaxodoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/20103386724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6815/4278/files/63002527373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5529/8213/files/34085341302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8448/9631/files/vegabejekozefogedanifuxi.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00086189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86189 5976 bytes
SHA-256: e9636ec00b0c84393cac35ec8fba7d0649c346ea1691f3f5f7afbc58af783ab2
font_01_sfnt_off0008759a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8759A 1188 bytes
SHA-256: ff651309bbdcff8c983c3c2fd0aa72d32c614acd8e9f29413d7b25ea97b27f97
font_02_sfnt_off00087c6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C6C 2848 bytes
SHA-256: fd30f42c6d368a4901baed232524f0a2cc3880fa561cd4f38a7ebfb43e2f81a6
font_03_sfnt_off000887c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x887C4 19184 bytes
SHA-256: f8c3b4688217afe190adfbb4dcab44d3aaff3294eb74270dd3232cbbc814eb59
font_04_sfnt_off0008c3f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3F3 17736 bytes
SHA-256: b54c958d5444b5df95cdb6f7a7441a75764355ad907375ae35120e3e31f42936

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