Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ab0be74c6fe5ee8…

MALICIOUS

PDF

60.2 KB Created: 2020-12-23 00:43:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: aa093280bcb11a7026afdd4946387b86 SHA-1: b5a14684b43cc58218bb29d7b7d65e7b533040a0 SHA-256: 4ab0be74c6fe5ee8656e4adfe8e5273598b6b06bd4d0afe9b8fc46057b6240ee
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL disguised as an annual report. The embedded URL, https://traffnew.ru/aws?utm_term=mapletree+greater+china+commercial+trust+annual+report, is highly suspicious and likely leads to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://traffnew.ru/aws?utm_term=mapletree+greater+china+commercial+trust+annual+report PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a746cfd-e4a5-4da7-ac98-0ba7594a934c/kozonusopawagosito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4141ee62-0733-4ee9-a764-cf5574a44689/47378843793.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/dispute_credit_report_charge_off.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a536708-8e4f-4328-b9bb-e8b7d07a1293/soup_and_salad_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5063da50-783e-49b0-892b-872f71edf58b/all_blues.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6062176f-8390-4098-b62b-5f82098f53cb/style_neil_strauss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34723df8-a2e0-4e7e-ac86-26f3a3e6f386/ethylene_glycol_boiling_point_under_vacuum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/904c4146-22b7-4477-802f-a61993d6ae18/perpendicular_lines_slope_formula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af8d93d2-34f9-4a8f-89f2-6741f0fd4326/farming_simulator_pc_game_highly_compressed.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/27990750455.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_off0000ac88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC88 5352 bytes
SHA-256: b781c904ddab3983f957aa7fa4fa7e8d9e85e0a34a8ba915b42014e15213d9ff
font_01_sfnt_off0000be9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9A 11076 bytes
SHA-256: e25154a1281c4aa532255535d347e22983df91338aa69e2b05df55e3beba12e3