Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee14455dce9a23a…

MALICIOUS

PDF

65.0 KB Created: 2020-11-11 00:16:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f9d11509c0706ffbbdd5a4b581d0aa9e SHA-1: 87894deec0ae5e2040dfa6d55ada881f5480c433 SHA-256: 9ee14455dce9a23ac8ae00fbbcaa690d79813f2f74b3846c2bcade0c997d5748
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffking.ru/123?keyword=sherit+app+download+for+pc+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5fa1a90f93739.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/f22694.pdfIn PDF document text
    • https://baxojozejaxofo.weebly.com/uploads/1/3/4/5/134586757/kekikawirat-sagubajefopu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460694/normal_5fa707391df75.pdfIn PDF document text
    • https://lifusapemar.weebly.com/uploads/1/3/4/5/134526201/3964ea845c.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/1672620d-862b-4777-9ee2-0f4c5eadb5fd/labafenagulawex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d39c9dcb-ca3d-4d5e-b934-9aeaee48a11f/61001225221.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/hold_the_rope_images.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b954481a-bfcc-41d2-8a4a-4bf3955cbfd2/maureen_murphy_comedian.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_off0000c0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F8 5740 bytes
SHA-256: 351dd7a7983278e8f9f1e011e229b37b1d26b70d6bceda01fa480c3a5c1489be
font_01_sfnt_off0000d49e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD49E 10404 bytes
SHA-256: e54a95591065b93f9078c1685c54ac87a9b2b20428fd44792d5c3f302e012d70