Malicious PDF — malware analysis report

Static analysis result for SHA-256 473d239e6d735cf6…

MALICIOUS

PDF

65.4 KB Created: 2020-12-21 16:08:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 60e3d77f4652961761c0d00871c7d1ff SHA-1: 0e68268eea6a66e493d908c7243024ecc80cc007 SHA-256: 473d239e6d735cf667a0fd606cbfd977f014c23ab1fe18a4650bf444b49b581c
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/strik?utm_term=space+invaders+game+boy+rom PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385648/normal_5faefdaaedd8c.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/7f0f74a0-40bf-4f82-9bd1-fe8207893253/latulozoxek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e56a9e-eeb2-47c0-b17d-814b5bed12b9/who_did_it_y3df.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/91595112348.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/womifefigujelifoda.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/36814344634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/271377e7-0b6e-4cb8-bbc1-c0471013836a/solicitud_certificacion_ley_300.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02fbad4e-923c-4b28-b868-9006feaf0088/garmin_forerunner_35_manual_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99db6005-c986-4f34-8bdb-26b82d39c901/parlux_hair_dryer_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/juvazefixabadifojon.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/10271939856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40d004c9-e28b-45c9-be43-4cee2bf672be/gta_iv_police_car_packs.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_off0000c06d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC06D 5764 bytes
SHA-256: a2bdf6419388b56357c5f0790ba69db67e8713d2e9b01e0dab222d8865cbb6d1
font_01_sfnt_off0000d3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F8 10860 bytes
SHA-256: 8853d83575ea4f2a6161ecf5aeaf8576015d699d0214f5a22eea7a3cb9101542