Malicious PDF — malware analysis report

Static analysis result for SHA-256 449efeaf5c7d1831…

MALICIOUS

PDF

68.2 KB Created: 2020-11-20 00:08:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bc6927dff8596715dc072cff52cefab7 SHA-1: 967c0ba6d0943179042669f0aa0efd2b42cc0e48 SHA-256: 449efeaf5c7d18310b9164584ddb577ca10363fe4235f949abc38664c8bfafa1
84 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a high-severity heuristic indicating it is a lure for free downloads, linking to an SEO redirector. The ML classifier also flagged it as malicious. The primary malicious URL identified is https://trafficel.ru/strik?utm_term=jamie+eason+workout, which is likely used to host or redirect to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/strik?utm_term=jamie+eason+workout PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469358/normal_5fb2f5906bc62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387421/normal_5f905160dd347.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f87248f268ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413019/normal_5fa26a3512141.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393369/normal_5f998f544dbc5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/be425d0a-0b79-4595-8261-8f0fba4572ab/14918437106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1b525b8-e6ce-4a29-9648-e092be72de88/segiramofip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7331eece-a251-44f1-8372-368d52b3e5a1/35500211911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d458b4a-9c7f-45e5-b0b0-c26ca1b31123/mifarobinevabiletezupama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6931d975-f3ce-45e2-bf08-c8da56d65376/fexakujojiza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4158d3e5-24d8-48fa-a1bf-4e3df738d0ee/temperate_desert_facts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba906f28-d625-48ca-ae79-116f3b74d358/hvac_troubleshooting_test.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD0 4944 bytes
SHA-256: f2426a872f039b47e26aab77486e8f05634ca939bd83ddbe0312bd80f6f0ecbc
font_01_sfnt_off0000de9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9E 11156 bytes
SHA-256: 315cbfa570ba9307ca4820c02c20e8067ebde4e3cdd3eba091cae09790af6b1f

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