Malicious PDF — malware analysis report

Static analysis result for SHA-256 af235f8fb7551e70…

MALICIOUS

PDF

44.7 KB Created: 2020-11-02 01:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: e03fde01b678d9b9633250959eadfee1 SHA-1: f05d433796c4cd2b429e7efe5be9df974d48109d SHA-256: af235f8fb7551e709363adf94d3cc0fe1acd0576884f6669bc625e60743f5d4c
154 Risk Score

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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://gettraff.ru/wb?keyword=mckinney%20trade%20days%20dog%20breeders In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366302/normal_5f87b3fab2a38.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/loseluxabivulotopef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379234/normal_5f8df1fb74e52.pdfIn PDF document text
    • https://mujunoba.weebly.com/uploads/1/3/2/6/132682006/2817941.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386842/normal_5f98d8db9ab71.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/difuxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/860b9c64-d007-4a22-bc01-4fd39d9f8181/81472462242.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fb8265f-1540-4b81-b9e9-b8740a5e18b4/baxetimalasanuf.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/10892357283.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/chicken_biryani_recipe_in_tamil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D8 2976 bytes
SHA-256: 4b51947f07a282bfefa749fe9c0157bafae5f151886bce6f0c1e2d15f318457d
font_01_sfnt_off00006c7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7D 5384 bytes
SHA-256: 657e688e24d0a6a3ba615a284440f51e7d4b5b0fe0b152d63d4e600a96181352
font_02_sfnt_off00007ef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF4 11500 bytes
SHA-256: 3965f25b46bc3dfb2c52943de97e5e26ab51fac43ce8251e32ebe074b548e3c6