Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05e80c45f1318f8…

MALICIOUS

PDF

45.8 KB Created: 2020-08-08 14:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d035ca706a5b9fca60748c250af569d SHA-1: 3fbbc7149748b60ac141e399c13e15963ed27065 SHA-256: b05e80c45f1318f82c6a503f92e55022177f387645985b8efdc725c1681d22a4
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to potentially malicious or unknown domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=piano+music+theory+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect users to this malicious site, likely for further exploitation or phishing.

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.ru/pify?keyword=piano+music+theory+pdf In PDF document text
    • http://files.815lashed.com/uploads/1/3/1/3/131379567/tazilij-ripesowid-junigivap.pdfIn PDF document text
    • http://files.debistrong4peacehopelove.com/uploads/1/3/0/9/130968921/01f7e300c72.pdfIn PDF document text
    • http://files.cycleecosse.com/uploads/1/3/1/4/131406650/sofegapanokojo-nixegifizoreji.pdfIn PDF document text
    • http://files.elkfordchamber.ca/uploads/1/3/1/3/131398424/f1688.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/1/0434/7104/4770/files/felimove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7053/6345/files/26474072798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1750/1853/files/esl_possessive_adjectives_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2106/3576/files/601713251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/doxikabogupinekinibuzovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/betuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/24314915778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6509/8918/files/tf2_interp_settings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/excel_2020_advanced_filter_tutorial.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B0 5468 bytes
SHA-256: 27d84a0ed75b5a05acbc833a436c243f402339153c96b5ff5550c50626add71f
font_01_sfnt_off00007329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7329 10076 bytes
SHA-256: 3881c95b0a6353c7e01d439f6af24d9af6e865fae3f6f640462e776e76aaa42c
font_02_sfnt_off000095a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95A4 16120 bytes
SHA-256: 46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12

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