Malicious PDF — malware analysis report

Static analysis result for SHA-256 245bf7b4ae88f457…

MALICIOUS

PDF

67.0 KB Created: 2020-12-17 09:40:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 099c2a5dfe3d09a94cc5c9068be430de SHA-1: d182727000dc27baa624b92e9f0c71cd400559b2 SHA-256: 245bf7b4ae88f4572d0b8e24a57784c874d0e0dc236f7fd7f7b6495469be58aa
214 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/123?utm_term=a+beginners+guide+to+day+trading+online+by+toni+turner
    • https://cdn-cms.f-static.net/uploads/4443824/normal_5fb2baf90438a.pdf
    • https://cdn-cms.f-static.net/uploads/4370077/normal_5fb408c50ff9c.pdf
    • https://cdn-cms.f-static.net/uploads/4414358/normal_5f9745b0a2840.pdf
    • https://cdn-cms.f-static.net/uploads/4489415/normal_5faab07fa172f.pdf
    • https://cdn-cms.f-static.net/uploads/4383149/normal_5fd2edc822957.pdf
    • https://cdn-cms.f-static.net/uploads/4451208/normal_5fbf157275900.pdf
    • https://kenodijegubiv.weebly.com/uploads/1/3/4/5/134501598/3122937.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc79b14a4492a057e2477e3/t/5fd1c8d57c12252903f47b0d/1607583957502/volume_booster_free_download_for_windows_10.pdf
    • https://uploads.strikinglycdn.com/files/571327fe-ff92-48d4-abc9-cf6252a809f5/42364261315.pdf
    • https://uploads.strikinglycdn.com/files/ee1d1a68-207c-4ae1-a545-317d98412818/xazefimorutapoxomiruwaj.pdf
    • https://static1.squarespace.com/static/5fc5090ce9fc3622d53c86e6/t/5fcc4cb6662d5e24e097177e/1607224502847/42041838884.pdf
    • https://uploads.strikinglycdn.com/files/ac9040bc-526d-4861-bc42-39759b4402d4/66737853475.pdf
    • https://static1.squarespace.com/static/5fcef49fad06677b0d28f533/t/5fd1e1c9ac13f65f66163763/1607590346607/sdg_e_power_outage_alert.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9eb.bin
aaca8bd09bb4ac01cf00f8d7af9f63a8f5f5c76127f1ef52ee3f34849eb6ab35		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9EB 5224 bytes
font_01_sfnt_off0000dbc4.bin
54d6b08ac80ea2dca81acdc07aca09efd709bf25a14e6235559f4dcf7f6aedb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC4 10268 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.