Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a6a9e130886b5cb…

MALICIOUS

PDF

78.0 KB Created: 2021-01-08 14:09:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6f3ffd2fdde25e961436773245570ad0 SHA-1: 00e14fd619c01e46dc6fd765bb490e9b7e99b801 SHA-256: 0a6a9e130886b5cb4452ed4c2cec1894f4f37c308dc01867dcefd6c4f5a4e1eb
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to 'trafffi.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Pak army ranks list pdf', indicating a social engineering attempt to trick the user into clicking the malicious link.

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://trafffi.ru/aws?utm_term=pak+army+ranks+list+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f871a110c3fd.pdfIn PDF document text
    • https://fojaxekixuwid.weebly.com/uploads/1/3/4/7/134743661/2b8cdfa0.pdfIn PDF document text
    • https://fexatawolev.weebly.com/uploads/1/3/4/4/134445796/gusevojabizele_konawizunoniw.pdfIn PDF document text
    • https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/6e7d77a9e001.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://s3.amazonaws.com/vuzufexarevima/40269694010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea8e58a8-512f-4c09-803a-3780fb44a670/ere_mi_estrella_capitulo_12.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/37630727441.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/tea_olive_planting_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e502a53-d1e8-4743-95e8-f359ce613e20/55870337740.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91822825-0db5-4451-a9e1-30e4670216cc/wigerotetitetuvudakewud.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/vozoji.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_off0000e6ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6ED 4916 bytes
SHA-256: 028f1f2b0cb6337f7074ea65829d8f8d866c3790d9d4b4ee28f549d82007e987
font_01_sfnt_off0000f77a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77A 11260 bytes
SHA-256: de138930bbbe27e5c0cf85ccf5ceff2e157d79c1ebdf9a0ec18c8a9db7323fb8
font_02_sfnt_off00011da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2