Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c219a955418a48…

MALICIOUS

PDF

66.7 KB Created: 2020-12-28 06:23:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 4454b223eb36101559411a40b5933e31 SHA-1: 56f85e16af0285306ff9361fa469232fa13fecc7 SHA-256: c3c219a955418a48a2cf77730454599b57a0fe71a9ddea6e5296f45163e1e62d
162 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. Although no scripts were extracted, the presence of a malicious redirector and the ClamAV detection suggest a phishing or trojan delivery attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=evaluation+sheet+for+work+immersion In PDF document text
    • https://najunores.weebly.com/uploads/1/3/4/3/134381484/cec142b71609a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417531/normal_5fdb99042f33c.pdfIn PDF document text
    • https://cdn.sqhk.co/zititepu/Nibuwmr/65483498407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423780/normal_5fa04eb741453.pdfIn PDF document text
    • https://cdn.sqhk.co/zosikoto/A9MzicL/87242597408.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/xidazeze/agni_5_missile_launch_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6499c956-e959-4a85-9b22-62dbfabba894/bufiwifuwo.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/yahoo_mail_password_change_link.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a5123e1-09d0-499e-9e67-84192c49c45a/chargepoint_map_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/638b4360-3575-4c0c-bc76-9010a2430341/paper_plate_christmas_game_snowman.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_off0000ca42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA42 5180 bytes
SHA-256: 14e4f97899ee61f494a1847b0a86037289d37bce6b293f53b333a15a4cabbe10
font_01_sfnt_off0000dbd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD1 10220 bytes
SHA-256: b0c504400bf3d1c468c9304b1cac912069bb6f8c9a221a3fa142bb21979d32fc

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