Malicious PDF — malware analysis report

Static analysis result for SHA-256 925f5dce95ffee52…

MALICIOUS

PDF

68.1 KB Created: 2020-12-29 11:29:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4b845e80f0bb7cb4da1ec10d93215ab1 SHA-1: bef4cfb6f0cb347fc9ab7b0d9e7fc49eb2b1ea1e SHA-256: 925f5dce95ffee5269d0491902c17975431fa4c4d99f71d754002a3c51c9f507
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a large number of embedded links, with several pointing to known malicious redirectors and link farms. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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.
  • 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.
  • 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/strik?utm_term=laser+quest+prices+for+birthday+parties In PDF document text
    • https://cdn-cms.f-static.net/uploads/4401694/normal_5f9d7af9abca6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382958/normal_5fc7fda014b34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403127/normal_5fd10f0251e1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390659/normal_5fa0d8b7e7810.pdfIn PDF document text
    • https://vilujelirajoki.weebly.com/uploads/1/3/4/3/134378771/63f450039f6.pdfIn PDF document text
    • https://kutujenedida.weebly.com/uploads/1/3/4/7/134759749/dezeveru.pdfIn PDF document text
    • https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/fejuvo_novetiwobugud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474448/normal_5fc5e8ce55aed.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/85bf26e4-a2fe-4ef5-a031-91fece5f46b1/stardew_valley_world_map.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dae8d534-fa88-44b9-97d4-2200a273cf71/63576995702.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2dfa4117-5160-405e-a61d-157340210d65/76941188264.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe9ef959-ec12-4bb2-a1af-f97417e792a1/25041359950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5da13ddf-640b-4ad3-b905-8febb15cd302/10923668193.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB43 5520 bytes
SHA-256: 500f882a4064c8525fc5dd2825371ad85221e186596c06a18cec36061c76a676
font_01_sfnt_off0000de03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE03 11044 bytes
SHA-256: 4a7b2ee95ec8fb1336aa8b022c43ac019f3df144fd1e01c0a63767f3d9af5b4b

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