Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0077bac5b0d0364…

MALICIOUS

PDF

70.7 KB Created: 2020-12-27 16:29:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 22dfbd717c928b086de426fafd23a30f SHA-1: 3448b305df417e14a14fdf4160ee3bfba9f8117f SHA-256: a0077bac5b0d0364d96255668c31218560f41b486759eca48140ec5b0072b567
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 points to a suspicious domain, likely intended to redirect the user to a malicious site for further exploitation. The document body, though heavily obfuscated, appears to contain text related to the embedded URL, suggesting a social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/wb?keyword=walking%20by%20faith%20not%20by%20sight%20bible%20verse PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485322/normal_5fbc7bebcf73e.pdfIn PDF document text
    • https://xikosenazegan.weebly.com/uploads/1/3/0/7/130739601/4058633.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/geihhhU/38278192843.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/gdSrgBy/sutuzaropafipa.pdfIn PDF document text
    • https://cdn.sqhk.co/wedifedaguju/Qjfgh6i/34877207113.pdfIn PDF document text
    • https://cdn.sqhk.co/modebopogut/MidUQjR/the_sims_3_world_adventures_ios_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/hdgcShi/tabletop_arcade_machine_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/rogotojuseb/ijfLwQl/ted_bundy_movie_cast_netflix.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/60775be7-f34e-43c2-9591-f31d8d0285e7/49385239633.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b9e78be-bad0-4cb6-8dd1-6b730fe90f32/98611209310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05e5fb85-b409-4123-8346-f70b7df78677/padanuzubokopometomireso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5d38f82-6023-4f16-915d-e6dd573741f7/58642353949.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_off0000d927.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD927 5408 bytes
SHA-256: 86d084274587eb36d573d27a45cccb2510637c09748cd5e44137cb2a0394257e
font_01_sfnt_off0000eba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA1 9988 bytes
SHA-256: d677406f48265ca591e1add4d45955a7731dfc80e41caf52b149da6f873b1c3d