Malicious PDF — malware analysis report

Static analysis result for SHA-256 74c2af7e29a0527b…

MALICIOUS

PDF

84.6 KB Created: 2020-11-25 20:20:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f4cb72c7f1fc24dea8593d86c4da9537 SHA-1: d1f600e83f568b049502a9e244b57581e88b4f17 SHA-256: 74c2af7e29a0527b259068ece0c230ce4984966de4085d0fce44335462aab33d
214 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead users to potentially harmful content. The embedded URL and the ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to hacking a game, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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/123?utm_term=how+to+hack+simpsons+tapped+out+with+game+guardian In PDF document text
    • https://jawifimubagibe.weebly.com/uploads/1/3/4/3/134310986/612946.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/bomoworejitin-jijuvu-dinavo.pdfIn PDF document text
    • https://gejatovuri.weebly.com/uploads/1/3/1/4/131406669/wikibegodebu.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/4a832fb3-910e-4817-9fbe-d27997114c35/tubivogerigodomesoku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95ae30b1-ad0b-4fc3-8b1c-87def91f97cf/22544079191.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/nuluzekaka.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/wofaguwijowojeti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7c0d6e6-049d-4731-a742-ae1b5cdb6fc7/leruwuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1360ddd-6994-476c-9e4a-dae84d283655/zijutewujalotipemaxise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3198eed2-96db-41ea-9929-77114f6b40f4/80174336105.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_off0000fcd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD1 5456 bytes
SHA-256: df8f6445b8627f5be933c2aa68e83b20bc1eef958b5539c983caa9685dd25ad5
font_01_sfnt_off00010f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3D 12616 bytes
SHA-256: 9b4f7445c3353d8e60319d4974368010c4a1a1b4b4ae9088cfb972db061b6f2a
font_02_sfnt_off00013724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13724 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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