Malicious PDF — malware analysis report

Static analysis result for SHA-256 cde82edf2c8b9d51…

MALICIOUS

PDF

63.2 KB Created: 2020-11-26 01:26:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: afb44125dbdedac344a1b7a3e4ff185e SHA-1: d1f1714fbeb693e793a7e8925ffd94e929e41772 SHA-256: cde82edf2c8b9d513049791dbd3ebca0b2e0f096040abbce520a7e681f6036be
214 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with ClamAV identifying it as a phishing trojan. The embedded URLs, such as 'https://traffking.ru/strik?utm_term=racoon+skate+game+unblocked', are likely used to redirect users to malicious sites. The document body, though heavily obfuscated, contains keywords like 'racoon skate game unblocked' which serve as a lure.

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://traffking.ru/strik?utm_term=racoon+skate+game+unblocked In PDF document text
    • https://sotewedizi.weebly.com/uploads/1/3/4/6/134698886/0f8c6c18ca43000.pdfIn PDF document text
    • https://lipebelotoj.weebly.com/uploads/1/3/4/4/134475440/a679f60128.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5fb2530615c92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428043/normal_5f9fe1d3e9323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375708/normal_5f91671361800.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/cloudformation_bastion_host.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48170abd-72d2-4ff2-9c90-afe9378e1d45/furonurogofinat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e913f20f-b70e-4162-b2b4-fad3792d577f/figurative_language_in_act_5_romeo_and_juliet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ad27f9-64b7-49e8-8a42-5bcbef462711/xojefe.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/68838983756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ff177c2-14c1-4890-8fb6-50b3cd6018b5/richland_county_probate_estate_court_search.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42c8412c-e30e-43e6-93dd-0bb9aefe11d2/70633060726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b417bc7d-2769-41d4-a513-e3fab2e0353a/vazulizipesote.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/33907599051.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/patologi_adalah.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_off0000bb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB2C 5372 bytes
SHA-256: 26e400c96e708967781133bdd61a433c2f56e3a2d4f5c2d476b32c6e2aed6b60
font_01_sfnt_off0000cd68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD68 10196 bytes
SHA-256: 575c3ac13ea318decc0159de1bb6751a8bfc59db5828fc673a85bd03fe775fa6

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