Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e03066d4ee4072…

MALICIOUS

PDF

84.1 KB Created: 2020-11-26 21:01:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: b7c38695fff7a5ba82a01b3cc05364da SHA-1: 64237f4ff055550622e6e7eeb6d39958ab07acc4 SHA-256: 82e03066d4ee407241fc998a9cbc1c76d14215e4662b7b31bc6f9684c6a3c782
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves luring the user to the malicious URL, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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?utm_term=donnie+darko+time+travel+book In PDF document text
    • https://rixokofumi.weebly.com/uploads/1/3/1/3/131380985/4363cdb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f87158249d57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_5fb861e01974a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390681/normal_5f9a45659eb7a.pdfIn PDF document text
    • https://famopenagunabot.weebly.com/uploads/1/3/4/6/134688774/2261625.pdfIn PDF document text
    • https://kuburabet.weebly.com/uploads/1/3/4/3/134362545/fedezifopotegev_rifapekoroteke_jonebal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375071/normal_5f945739e07e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370063/normal_5f9b0c5dd76bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bee206c3-aaec-4ac8-9b53-adb29bb6862b/51413665152.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3bac765-ebeb-4a8e-ac9f-06f0757b4c8f/zamubula.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/chandigarh_police_song_by_pretty_bhullar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09f6c0f9-7de9-4698-b086-34ea7f03a96f/iconos_de_word_2010.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10041 4844 bytes
SHA-256: 368bc1ceed384bca39bbae5853f742928aef9513f8694eb2ff121a6c2bf74fab
font_01_sfnt_off000110a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110A4 10216 bytes
SHA-256: 2197260b7bc4297d8fa6836b07bc148ab353d0f50f8a1b529ff4c3abc0703f29
font_02_sfnt_off000133a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133A8 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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