Malicious PDF — malware analysis report

Static analysis result for SHA-256 011309f1fa2f0b7e…

MALICIOUS

PDF

59.9 KB Created: 2020-12-23 19:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 5f8dbb1452d7557c3774eb336aab1d32 SHA-1: 105073531654128d0c39e67b7603730f8fdf0db6 SHA-256: 011309f1fa2f0b7e593fbfe57d55ef8a4b3dd37be2dd545431b6cca2210ea748
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/strik?utm_term=atticus+boo+radley+game PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f8e30cd2971d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474218/normal_5fcaea8957dd1.pdfIn PDF document text
    • https://vagesazo.weebly.com/uploads/1/3/4/7/134747595/bejuwabixonivij.pdfIn PDF document text
    • https://jojavofeze.weebly.com/uploads/1/3/4/3/134395471/mezibabo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424330/normal_5fd26c3362782.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426556/normal_5fab779ea2be6.pdfIn PDF document text
    • https://suvibumaluri.weebly.com/uploads/1/3/4/4/134458401/9428934.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/d4384339-b8fe-485a-8dbb-8c06eb8852da/hyper_light_drifter_sprites.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7c39b6f-c801-403e-99ff-45d02844dfbc/pack_square_park_downtown_asheville.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_off0000afbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFBB 5492 bytes
SHA-256: f609d125392c8b056beccc98b14a4bfc18eb2c5beec31a2932ae897683163633
font_01_sfnt_off0000c257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC257 9676 bytes
SHA-256: 1041435dd9f74745845030a0257e318b51a913369a0d6790c1fa9a8065fffe76

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