Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bac305c1266bb2b…

MALICIOUS

PDF

84.8 KB Created: 2020-08-07 07:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c34f3195854d4cdd0a590edc16cdca2 SHA-1: 4d912269f1e632efbce61e0f96fae9d495da0fd1 SHA-256: 5bac305c1266bb2bbc9e84392e2000cd82a12df1a05f71e62f4d50f341719647
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com, which is flagged as a redirector for malicious content. The document body, though heavily obfuscated, contains text suggesting a lure for downloading educational material, which is then linked to the malicious redirector. The presence of numerous PDF links, many pointing to Shopify domains, further indicates a link farm designed to distribute malicious files.

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/pify?keyword=cbse+class+11th+maths+book+pdf+download In PDF document text
    • http://kopob.wheretonext-explore.com/uploads/1/3/1/3/131379730/giwalixatijadariz.pdfIn PDF document text
    • http://files.trnsetters.com/uploads/1/3/1/3/131379680/ba5bd971f7b.pdfIn PDF document text
    • http://files.ryswint.com/uploads/1/3/1/3/131379320/94831fe2f8c.pdfIn PDF document text
    • http://files.safelysweettreats.com/uploads/1/3/1/0/131070356/fisikolaxo.pdfIn PDF document text
    • http://gosowopix.ssenglishbulldogs.com/uploads/1/3/0/7/130740596/2980265.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/1/0428/2161/5775/files/72058548475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/divew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/tanatologia_catolica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5576/7967/files/59652791603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/rimeseloxuros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6835/0873/files/99881348791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3489/2693/files/7903927195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/zifoworepogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2265/4362/files/44702861542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/3754/3848/files/ios_launcher_kukool_launcher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/bojitafemeze.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9B8 21372 bytes
SHA-256: 2a318f21f15107c61308c4687f54bc530f4ee6e6de5664a32f940eb5dc8109b6
font_01_sfnt_off0000fd22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD22 5552 bytes
SHA-256: af9875268051d88389cf2e6fd174aeb3d731c024799c96a91a55ff828a7e9bd9
font_02_sfnt_off00010fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FEF 17104 bytes
SHA-256: 5c735c0ad44fa0b20ab01297fee3c7e5204ca470d4af134ca5bdcdec68642bab