Malicious PDF — malware analysis report

Static analysis result for SHA-256 974969e9389f1ccb…

MALICIOUS

PDF

78.3 KB Created: 2020-12-15 08:05:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 234abbcd927a3ddebc142cc05e0d35b5 SHA-1: 7675df98212081b37a84c9791d32602bd9234387 SHA-256: 974969e9389f1ccbf9e16f047a7c6e17fb01e54c098a1b88e316f4f92fb88199
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a URL that mimics a search result for a specific document, likely intended to trick users into downloading a malicious file. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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/123?utm_term=descargar+20+poemas+de+amor+de+pablo+neruda+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416932/normal_5f980b5cd4b3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387920/normal_5fd61734af240.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/e27e3248-8ad4-47e2-8f7a-e8e7dd619fc6/935817228.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/tezaroraruvejewi.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/bigasoft_video_converter_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19f3fddd-e77a-432c-9b68-edf83da077eb/football_heads_2018_19_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/model_bordereau_d_envoi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f5b39a9-f3b5-4abb-8a17-948f26abe68e/gufelifujuwogapovupogoju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22fdf904-4191-4021-9dc6-c075ecf8dec1/41425374435.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe6f149d7936484060875f/1606315800315/period_definition_physics_example.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/45639017381.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc002d40b6b03258f30bf3d/t/5fc268cf9d79364840db90d7/1606576355936/avengers_endgame_wallpaper_3d.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_off0000f2b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B3 5888 bytes
SHA-256: 6394a6fe29e545e31ebca20d2b1a7b067ab4d216bdedf492ffeace04df10d256
font_01_sfnt_off000106a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A4 11536 bytes
SHA-256: 007ad1da2bdf4469e90dd4c4937e000a1b86024e26a65c90c9f50c3d2cee18e2