Malicious PDF — malware analysis report

Static analysis result for SHA-256 5874770629ce86a0…

MALICIOUS

PDF

65.9 KB Created: 2020-12-05 14:15:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7aea0870a66c5036af7e9588ba6a7314 SHA-1: 9cdacdcf5b7640e06159220244d6e1d5538581f8 SHA-256: 5874770629ce86a0acf8afdf1b20e367a9a2eb90815b8113fece3f5afd66fdc1
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to financial information, aligning with phishing tactics.

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://trafficel.ru/aws?utm_term=life+insurance+company+balance+sheet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4367921/normal_5fc4b8d512869.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413701/normal_5f961abb04f4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbfd308239b0722912b0841/t/5fc388481972c46e3c0b82b4/1606649928864/porurimanetebij.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1701a3dfdd95b60d8e131/t/5fca379581b71b4085a0413b/1607088022615/guilty_pleasure_meaning_in_kannada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2cab537-1bce-47fc-a1f8-c3a772a016e6/20159268390.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1318a5bcb0228a2845bc9/t/5fc6c155a038a451bcd6a353/1606861142312/lynx_vs_bobcat_weight.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65b814fd-0e83-4a03-85e6-73ccd8248c47/nuwedajuredekilufikil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c991c6d9645836219624/t/5fc0dfac61e25426e1588eda/1606475697666/75434430618.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0f135147b14804fa635e/1606291219893/time_add_command_minecraft.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1b82e11f6a419848b6c75/t/5fc53abb3c6ccf69f3092a5c/1606761149285/ar_blue_clean_112.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/018d5152-ee78-4724-8abe-5c6230011c85/importancia_de_la_capacitacion_policial.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0dfffc9-9876-40a2-a810-b37b44872cbc/silowupafitirimikaxef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b77bc558-1205-4b72-b651-4df426afd3da/76331762518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3ae2e8a-0438-4678-80d2-ce8bba3f3113/buy_here_pay_here_albany_ny.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4fe50c30a162e0c6cbe8c/t/5fc5202518e72e5fdb7b941c/1606754342053/61201874152.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_off0000c62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC62E 5436 bytes
SHA-256: 86d6c4e828c4c148c443e813adc93583633027271a9f27cbb370a0743972f424
font_01_sfnt_off0000d888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD888 10108 bytes
SHA-256: 18ec78efb46286a72c44a48d1d1ebad57c3d220a6508761b3126051cfad3f331

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