Malicious PDF — malware analysis report

Static analysis result for SHA-256 19156bddc009e06c…

MALICIOUS

PDF

72.9 KB Created: 2021-01-02 09:54:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 8dc6585d76c0e6cc8713a186a7ab71d1 SHA-1: 67f3adb577f4ff7f7a22d3dfc4a747806749372d SHA-256: 19156bddc009e06cc983a65ce6b2ab9391beb60c1bff9c561f18cf92458f1683
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/123?utm_term=proving+triangles+congruent+worksheet+4-4 PDF link annotation
    • https://gefojepedawe.weebly.com/uploads/1/3/4/4/134478994/pogebodi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f90d7b33ef67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480383/normal_5feed7e088995.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/sodokazid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374708/normal_5fa690a23d300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473616/normal_5fda50f8ebbdf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369332/normal_5fa59e6f86637.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/02a65853-e464-484f-bc59-3dafe77a4f80/gory_guerrero_vs_cavernario_galindo.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/tatejogetapejenase.pdfIn PDF document text
    • https://s3.amazonaws.com/wusone/cours_sur_les_amplificateurs_operationnels.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/39793018163.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_off0000d453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD453 5400 bytes
SHA-256: f2dd761b8e5e5ee3d35966d1987601c2bcdc320daf512e670a5211ef4d3aeb64
font_01_sfnt_off0000e6c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C8 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000ef56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF56 11448 bytes
SHA-256: d40cb00817738266af7c96b88b66252ff61bced3fc3ae2c768a2a1ec28ceddbe