Malicious PDF — malware analysis report

Static analysis result for SHA-256 8693daba7d473cc6…

MALICIOUS

PDF

44.4 KB Created: 2020-08-14 15:39:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc64655e26228adc9ac06d92f59dd00c SHA-1: b29cbad988bbe86d87cf48525993a0daa166d4f5 SHA-256: 8693daba7d473cc6ffe0336eb6195dbe3dab4255fc3049a9ae9e5d30da7fbc95
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, contains references to song covers and manuals, suggesting a lure to trick users into clicking the malicious links. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous SEO-optimized links further indicates a phishing or scam attempt.

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.cc/pify?keyword=cover+lagu+hanya+rindu+della+firdatia In PDF document text
    • http://lavajok.contractresource.net/uploads/1/3/2/8/132815933/gaxijisoga.pdfIn PDF document text
    • http://files.stopglobalwarmingdaily.com/uploads/1/3/0/9/130969176/suposepixizovozidid.pdfIn PDF document text
    • http://files.ectrojanbands.com/uploads/1/3/1/6/131636642/notidipijude.pdfIn PDF document text
    • http://files.activitymatterslab.org/uploads/1/3/0/8/130813841/5426210.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/1/0431/0050/4217/files/sims_3_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1729/8329/files/52324550813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2493/3283/files/diagnostico_comunitario.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2129/3974/files/al_seyassah_newspaper_kuwait.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/67323787362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/nimididok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2588/1498/files/29672500904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/18339800158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5283/4717/files/5800536178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29529942485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jatud.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D67 5060 bytes
SHA-256: 3135a6578c8a83334fb98080c8a70437bdda675a740c5b5ba7632de439cd451f
font_01_sfnt_off00005ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA3 9920 bytes
SHA-256: 4c248a6830a2ddb6bd6009422fa78c18aa68756e70857b2a950dc9964f170b00
font_02_sfnt_off000080e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E3 16204 bytes
SHA-256: f04fb96856fa86c99babb5bf309615b780632e07d2318923ed038a7bfd4fd4ce
font_03_sfnt_off00009611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9611 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378