Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b4586d811d627e…

MALICIOUS

PDF

43.4 KB Created: 2020-08-02 19:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf8a79200abda581abe9f9cb4230e3a5 SHA-1: e4eec41a15974ba56245064bdc1cc8ef87e7c574 SHA-256: d5b4586d811d627e89106a26b263f123ca0f3b6e3fe8d3a71d7c514f7543fe72
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking podcast title, suggesting a lure. The presence of many external PDF links indicates a link farm, likely for SEO manipulation to drive traffic to malicious sites.

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=skip+and+shannon+podcast In PDF document text
    • http://files.bikingtheforks.com/uploads/1/3/1/4/131407742/93ed40e1.pdfIn PDF document text
    • http://files.tbirdnutritional.com/uploads/1/3/2/3/132303170/6990544.pdfIn PDF document text
    • http://files.heymannportfolio.com/uploads/1/3/1/4/131437531/2152611.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/1/0434/0380/4839/files/gajixamibusibupelilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/39610080798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/57195146754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5744/5029/files/duwojav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53741046047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/gigopozebifevezifomux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5702/files/neluwib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2935/4903/files/20306626293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/mosoworepuziz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/pukititewubog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/nord_vpn_accounts.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 6

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_off00005584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5584 5200 bytes
SHA-256: 22883bedf16bac0fe675839c8585b44a0b6414a5e1b9a4cd28f7209c7c008e1d
font_01_sfnt_off00006738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6738 10180 bytes
SHA-256: 86d31bd271e5ad7e28848aea4ac7aab031c6a133a1e7fd5c1b114f7afa2a35f4
font_02_sfnt_off00008a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3F 16448 bytes
SHA-256: bbc8a377ea308525ea4a093a1cfbcbef18081e68dbc1dc7ef94177a4c93541e5

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