Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ae6ece51d196605…

MALICIOUS

PDF

76.4 KB Created: 2021-02-13 18:13:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1e645ba07291fdefb9755525bb16feb9 SHA-1: 3656f9703620365cf73c0b438314375a1db3805f SHA-256: 2ae6ece51d1966055a04ce963b06aa10942472b12f56c5531aa4d4386fc3abe4
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, specifically as a phishing trojan. It contains an embedded URL leading to a suspicious domain, likely intended to trick the user into clicking it. The document body, though heavily obfuscated, suggests a lure related to Google Sheets, aligning with a phishing attempt.

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://leonvi.ru/aws?utm_term=sum+column+google+sheets PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388177/normal_602185b2c5df5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5ff5f10a3372d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453754/normal_60157f7c55c1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481271/normal_6023f278a3592.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/gjeicig/black_label_apparel_reviews.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_602221c53c4f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421039/normal_60118a657ec8f.pdfIn PDF document text
    • http://kikizuzufo.iblogger.org/36884472825.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458840/normal_5feb17e99c76b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480382/normal_5fe43b0e81ae9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501367/normal_5fe0b7a09cd8e.pdfIn PDF document text
    • https://cdn.sqhk.co/kosozezoxuxe/eheRYRS/riwonemedililagaruj.pdfIn PDF document text
    • https://cdn.sqhk.co/jemitaso/eihijOP/zujep.pdfIn PDF document text
    • http://puxegosabax.22web.org/form_of_punjab_university_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/iewvxaf/weed_inc_idle_tycoon_mod_apk.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
    • http://vazorilumi.epizy.com/experimental_probability_worksheet_7th_grade_answers.pdfIn PDF document text
    • http://dekifovep.epizy.com/ketapijof.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_off0000e086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE086 4844 bytes
SHA-256: fa72debc47d733baf9e5df14cce894989fe2e43ae443fabcd9721c86c50aa855
font_01_sfnt_off0000f0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D5 11248 bytes
SHA-256: be09ff393105ca02cbf077db473c9d68519e46081e76026f78a15a315803ca39
font_02_sfnt_off00011680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11680 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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