Malicious PDF — malware analysis report

Static analysis result for SHA-256 604344bf19378f97…

MALICIOUS

PDF

37.8 KB Created: 2020-08-20 12:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15894596fc787cb1a60fd2eab3cef8a4 SHA-1: 08fb6612f6c2b31c4ea9a8ec421278617e2a4cd9 SHA-256: 604344bf19378f978cf44fda1402ec7ad244c2598bdbba258d87dc6d9fc4d0b1
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to redirector infrastructure like 'ttraff.cc'. This suggests a phishing or scam attempt, likely using SEO tactics to appear legitimate. The ML classifier strongly flagged this PDF as malicious, and the presence of redirector links indicates an attempt to lead users 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=flight+training+magazine In PDF document text
    • http://files.hilarymurphyphotography.com/uploads/1/3/1/4/131407802/liwevenepi-nebefifovogaj-zikafi-nidekuvunimu.pdfIn PDF document text
    • http://files.unad.agency/uploads/1/3/1/4/131437535/9942607.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/1/0430/1769/9477/files/4976379337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/bajamorotez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2204/7637/files/ave_maria_gounod_soprano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7804/files/aconsejamiento_pastoral_bernardo_stamateas_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/gikejid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/72060748859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6794/6648/files/antiphospholipid_syndrome_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0482/9602/files/76113855139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/43875077715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8381/7375/files/a4988_stepper_driver_datasheet.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_off000057b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B3 4924 bytes
SHA-256: 82ea9133dd0f847a3b511f52ccb7eb487ffed5fa1524406eaad5c8c46d2a00c9
font_01_sfnt_off0000684d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x684D 10180 bytes
SHA-256: 36f9f3fa17dba0c079f528fa6ecec80008cbf9f3573ccbc512026773900df4ae

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