Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f250079b688292a…

MALICIOUS

PDF

54.2 KB Created: 2020-08-11 14:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b463289beb0e3cbac4bfb76cc51f607b SHA-1: badff3dd70ac161811bf083934b4e5bbfc708348 SHA-256: 0f250079b688292adc1ed20284118505474df7852f581690f316fb1d8b1d0685
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically 'https://ttraff.ru/pify?keyword=a+ha+take+on+me+sheet+music+pdf', which is flagged as malicious. The document body, though heavily obfuscated, appears to be a lure for sheet music, attempting to disguise its malicious intent. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this PDF is designed to redirect users to harmful 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.ru/pify?keyword=a+ha+take+on+me+sheet+music+pdf In PDF document text
    • http://files.tetokiharuru.com/uploads/1/3/1/4/131405940/sebidure_roboduvonitu_damenuvod.pdfIn PDF document text
    • http://falez.danieldrucker.org/uploads/1/3/1/3/131383483/nakibej.pdfIn PDF document text
    • http://files.holmescreekbc.com/uploads/1/3/2/6/132681625/paxuzaxebu.pdfIn PDF document text
    • http://muvup.westtrailmassage.com/uploads/1/3/2/8/132814930/fukujaw.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/1/0431/8239/1451/files/69996932361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/2390156417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/75056573417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/19835134136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9114/0512/files/tv_guide_lancaster_pa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5706/7685/files/14003611422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8198/2361/files/vujetekegek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8107/2789/files/noseletokexupasid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1361/1413/files/snoop_dogg_da_doggfather.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/attorney_client_privilege_waiver_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0006/0310/files/24099392276.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8061 5320 bytes
SHA-256: 0aa783f0180f237bfd5eb8c3934b1d051ef29bbe22dabfdbed4b5fe3ef2109b1
font_01_sfnt_off00009253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9253 10492 bytes
SHA-256: 58d5d6b21ba689a8ff7ed37427656969c3d2fcc45816a0e6e9e114f33f6b960e
font_02_sfnt_off0000b677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB677 16100 bytes
SHA-256: d973db94ba2c448c661c26f08d051ac794e7cb4f3c7daa33c2141e8036f071b6