Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f6d6345c34d5cda…

MALICIOUS

PDF

69.1 KB Created: 2020-11-20 03:18:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 0c2d750b9a6f2a693169414abd3fba9a SHA-1: c220610a22114fc994de6cdc89f72aa4f779d702 SHA-256: 7f6d6345c34d5cdacca71a5ec6d8a7e680b6cb97183343123e75c9563c8a5b0e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffine.ru/aws?utm_term=tour+guide+another+word+for In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384650/normal_5fa1a9f15283f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5f8de05235dc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464524/normal_5fad5c6d2bc9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_5fb60aa96ff3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8700cd06128.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379476/normal_5f9734f67d66a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402503/normal_5f9b0c744ccb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368970/normal_5f88b9cd49ff3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369936/normal_5f89cf42a469f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379626/normal_5fa41da74ea90.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/c797f48b-f4df-4855-ad74-36cdc5fbff8c/93058136782.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/128be41e-4661-4b63-b36b-9b7265636d21/36914763726.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/wejafupanogexenuvoweluper.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/59020635865.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_off0000d028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD028 5000 bytes
SHA-256: 0df43186bfc29c8ee8a787be5504fa37e03f467cbfa59506a593207c88745898
font_01_sfnt_off0000e13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13B 11316 bytes
SHA-256: f80f0cf23b87c055a498cfe73f2c19191b3f08f3cc21fbd07d4f5420a1c6179b