Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d12d14f0939b9b2…

MALICIOUS

PDF

67.4 KB Created: 2020-11-11 09:00:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 665ed8010c9469cfba514f9675b3215c SHA-1: 88bc0992e2143cae9e99fe3d0c709fa7935c360e SHA-256: 7d12d14f0939b9b21e30734f36765fe42645f92bad15e791f4316671995099b2
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector associated with phishing lures. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of numerous external PDF links suggests a link farm or redirection strategy to obscure the final malicious destination.

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
  • 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://traffine.ru/strik?keyword=dokkan+apk+hack In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_5f96938c44322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412584/normal_5f99f023bda2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384036/normal_5f935881df02b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376609/normal_5f91789199bb5.pdfIn PDF document text
    • https://vevejeda.weebly.com/uploads/1/3/0/7/130776099/forakajaluxefiji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383798/normal_5f98a226bc8a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380701/normal_5f8b693b34f8f.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/c55fe2b6-f701-46ca-8c06-725b6f118023/local_winds_are_best_defined_as.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/goxabipojuwigepunokanam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/783ec490-a5d5-47e3-9111-efb887c28217/3441526193.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/2001_land_rover_discovery_2_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/value_list_in_assassin_roblox_2020.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_off0000cea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA8 4776 bytes
SHA-256: 75706e7303aaad5dae3a8210f147e20c4ff4ef73dc717d96a69c0bb1044908e5
font_01_sfnt_off0000def3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF3 10032 bytes
SHA-256: 8d5293c9988d84eee6b7dd927b03ebb0c3c2003c395477567c4563b6a7b46ccc

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