Malicious PDF — malware analysis report

Static analysis result for SHA-256 6190e28bda7cf5f2…

MALICIOUS

PDF

70.9 KB Created: 2021-03-17 17:30:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 407e0b01713c3fb9bde04332b1d0cf35 SHA-1: e92443c4267fbc6e2c9e63dbd3c226f5fab762be SHA-256: 6190e28bda7cf5f2880c7ce14c61dce3c0c08cc0e3d9707897d5106334a3f9f4
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 URI pointing to a suspicious domain, likely intended to trick the user into visiting it. No scripts were extracted, but the overall structure and heuristics suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jumiwimov.ru/award?keyword=biotechnology+and+food+safety+pdf PDF link annotation
    • https://cdn.sqhk.co/vabilafibalu/hijMrhj/8738593972.pdfIn PDF document text
    • https://cdn.sqhk.co/veletafi/hiMggji/sokumakerejifexaf.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/fNhcmif/outside_dining_near_me_open_late.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446921/normal_60354a4ca2eb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474988/normal_602510742e691.pdfIn PDF document text
    • http://miribut.mywebcommunity.org/17717207799.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/diplomatic_answer_meaning_in_malayalam.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/gixumus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f46bacfc-212d-4930-9ab7-ebfa31e8050c/verbos_en_ingls_conjugados_en_presente_pasado_y_futuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdfa9e2b-9c38-4e4e-b258-8e6d12ab337c/5504440238.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/81278452191.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/honda_civic_2006_model_radio_code.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/assassin_s_creed_identity_apk_hack_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9fea69d-a770-4612-943d-b6a45d49fb04/poluz.pdfIn PDF document text
    • https://medlineplus.gov/foodsafety.htmlIn 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_off0000d7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E9 5472 bytes
SHA-256: f1afec64415807dc79e3098a9244692514985a409b578db5e0aac5d68f1985b2
font_01_sfnt_off0000ea96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA96 10808 bytes
SHA-256: bb47444341126805d4b79fa1f5d1008055dff9f1c9ade64839e7d6622c99de7a

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