Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee339c2de15135c0…

MALICIOUS

PDF

79.8 KB Created: 2021-04-05 17:34:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: befea5853657cc005f8d326f18c81b29 SHA-1: a102e3f64ca02e57a299290b8a1c16f860fb5f2e SHA-256: ee339c2de15135c0fa0f118d83516dee8f941132a51b214717a134a16ba87287
136 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 a suspicious domain, likely intended for phishing or malware distribution. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be part of a multi-stage attack involving encrypted archives, further indicating malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://resalured.ru/award?keyword=uses+and+abuses+of+statistics+pdf
    • https://cdn-cms.f-static.net/uploads/4373241/normal_604a16528940b.pdf
    • http://jurogiriwizezaw.22web.org/how_to_reset_comcast.net_password.pdf
    • https://cdn-cms.f-static.net/uploads/4465388/normal_6064f81bb37f2.pdf
    • http://temonaga.22web.org/algorithms_4th_ed.pdf
    • https://cdn-cms.f-static.net/uploads/4488570/normal_60306d031032b.pdf
    • http://dazenad.iblogger.org/rifazelamivabexoviralenoj.pdf
    • https://cdn-cms.f-static.net/uploads/4369766/normal_606745ddcc056.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ff7b3adc-f502-4f18-9502-e68bcf309305/what_is_the_nurse_like_in_romeo_and_juliet.pdf
    • http://jilubumidevub.rf.gd/mexafagu.pdf
    • https://uploads.strikinglycdn.com/files/5bccaac7-88eb-41bc-9e19-1019ff12c969/xalamikokutubulabenusopal.pdf
    • https://54570836-76ea-4100-b78f-d1ba4c3cc0d1.filesusr.com/ugd/21ac59_7b4537ded85c414a892b8ce00cbc4e18.pdf?index=true
    • https://9ffa65b4-b95e-481c-977d-2cf6acaa57d7.filesusr.com/ugd/f68d46_78098482aaf04e49a99d18cdf0c919bd.pdf?index=true
    • https://s3.amazonaws.com/moduxanakuri/dogazipigagumujebuberetew.pdf
    • https://s3.amazonaws.com/busutafitufe/capital_market_instruments.pdf
    • https://uploads.strikinglycdn.com/files/536dd64f-0609-483b-b6f2-96b88a9bcc25/49230718274.pdf
    • https://2ea3657d-1c4c-40dd-8491-58aeeb8dc933.filesusr.com/ugd/18a85a_3fa9a5445d104cc991a14cbf6160867f.pdf?index=true
    • https://f5ab370f-1445-465c-ae0a-adb246d340ff.filesusr.com/ugd/2d95ce_53d38566b8af47fa96583506025e8a55.pdf?index=true
    • https://s3.amazonaws.com/lumixi/coolrom_ps2_games_for_android.pdf
    • http://nisarinu.epizy.com/bamosijuxavep.pdf
    • http://familule.epizy.com/49964947307.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa93.bin
61bb8922a028c00900cb2fe2673ec013dbc52f513ec6e7bbf498f1483262b9ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA93 5152 bytes
font_01_sfnt_off00010c2e.bin
89cf4fbd3a3fb427bd2f7d06c5c071323f387cd50a23edc39ac8e749dd7e8d6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C2E 10920 bytes

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