Malicious PDF — malware analysis report

Static analysis result for SHA-256 37f95a7a076e7af6…

MALICIOUS

PDF

45.3 KB Created: 2020-07-30 14:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7c2852a7ea972c847092a5fc3fe5a38 SHA-1: dfdba8d7e81934bcef6f1b17eed79300642e04ef SHA-256: 37f95a7a076e7af6a87ca75999423abe3ed358bfaefb18b826abd1cd7bc94f05
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=cintiq+27qhd+manual+pdf'. Additionally, a large number of external PDF links were found, with 'https://cdn.shopify.com/s/files/1/0433/1218/5494/files/jixopixed.pdf' being the first identified in a link farm. The ML classifier also strongly flagged this PDF as malicious.

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=cintiq+27qhd+manual+pdf In PDF document text
    • http://files.tucsonkestrel.com/uploads/1/3/0/8/130813588/3056085.pdfIn PDF document text
    • http://files.lushmetals.com/uploads/1/3/0/8/130813646/nenigojiduxejox_burove.pdfIn PDF document text
    • http://files.hatwanhospital.com/uploads/1/3/1/1/131164052/segikejusora_jevumozabiruzor_xutojatesunudoz.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/1/0433/1218/5494/files/jixopixed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9119/0167/files/badakusurexikavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91428743782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/juzopovomew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8523/3304/files/42568441472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8133/4935/files/85105304171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/97938285665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/tarijuketekubonebumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/65798275060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2608/7064/files/82740536506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.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 4

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_off00007592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7592 5020 bytes
SHA-256: 5887476306c59b9b32532bcd85b45f015e83f2b18da9d8156f8d5270b0b0c7f6
font_01_sfnt_off00008676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8676 9984 bytes
SHA-256: 933ddd442dab4b7639bed792a141c3ddb9fd8c47b2fb6d8938df89e0a4dfe0ec

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