Malicious PDF — malware analysis report

Static analysis result for SHA-256 750208f80e1a57c7…

MALICIOUS

PDF

82.5 KB Created: 2020-11-09 23:30:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a345e27aeb1c1f6358c398a9f52d75be SHA-1: b95f1f4541dbf0cbff4a5883a196024088cd23f6 SHA-256: 750208f80e1a57c76dea6236f502100d31dd0806f9f031876fee38b7aa5dfb17
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for phishing purposes. The document body, though partially corrupted, contains text related to professor ratings, suggesting a pretext for the malicious link.

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
  • 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://trafficel.ru/strik?keyword=rate+your+professor+pcc+shaw PDF link annotation
    • https://siveruvamavekug.weebly.com/uploads/1/3/4/2/134266289/renafe.pdfIn PDF document text
    • https://mofalapew.weebly.com/uploads/1/3/4/3/134307760/paveloruponep.pdfIn PDF document text
    • https://zirenujunez.weebly.com/uploads/1/3/4/4/134431605/1708db3fa4104.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/gupuso/barbie_doll_sewing_patterns.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/789d4863-a342-4cb6-845a-478f1a013279/degofirujiw.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/add_text_to_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2224509f-4ddb-44e9-9c8e-82f6c6b8bf8e/fogapoguwufokijiziserozim.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/walegixalekajeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebe0a553-7530-44a6-9a29-5a4e14993f53/inequality_triangle_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae17e41-1afb-4db2-a921-cdb688d45f96/epson_h429a_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/pokemon_fusion_generator_1-8_games.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/51985441922.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/ap_style_2019.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_off00010580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10580 5272 bytes
SHA-256: fac8477e5417a0f49b59f50dcc0912bfd000a4e199130a63baeb3d4c0256131b
font_01_sfnt_off0001178c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1178C 11112 bytes
SHA-256: 89d3a85a54dce9b1bd8c15eb9b969f31ed24efe0080b78d7d2696cd31bf06d03