Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd756ada2103d1a4…

MALICIOUS

PDF

48.2 KB Created: 2020-08-15 17:23:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 04650ea270c956ad1ed7abb5f81e8343 SHA-1: c4fb9d9ce102dbd9fe6ae90bb8ec2b2a7bbc4e9a SHA-256: dd756ada2103d1a49be868be060a952e2efd158444818a063f9b8fdd65fa6c8f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a link farm. The embedded URL points to 'ttraff.com', which is known malicious infrastructure. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The primary attack pattern involves luring users through a deceptive link.

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/wb?keyword=calisthenics%20program%20for%20mass%20pdf In PDF document text
    • http://files.historyuntangled.org/uploads/1/3/2/6/132696465/4078281.pdfIn PDF document text
    • http://files.krgriffiths.org/uploads/1/3/0/8/130874129/96dffd9.pdfIn PDF document text
    • http://files.fossilridgetheatre.com/uploads/1/3/2/6/132681664/512b94f.pdfIn PDF document text
    • http://files.drivershieldasia.com/uploads/1/3/1/3/131379540/lagusila-nebuzesodono-masinituguw.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/1/0431/3848/2332/files/wedgewood_stove_manuals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tuwaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1089/1680/files/26005077143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/likiluvulapan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/femiwilotarajapew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9157/files/87693601642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2982/1600/files/gekigot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/aesthetic_philosophy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/65478617923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/guxukolapegigum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tugomedimugatusigoxafif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/85792432140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/42920644283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/acido_citrico_usi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E96 5476 bytes
SHA-256: 9eaf4b26049ea10e90919db719476e58efea7f8baf4958d95f6a0e9007dad936
font_01_sfnt_off000090fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90FC 10072 bytes
SHA-256: 13d63b34b412db49faca11208411633290f4ff4aa1ddfe7805c1919cfec6bb43

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