Malicious PDF — malware analysis report

Static analysis result for SHA-256 c06e3f367fd55b4b…

MALICIOUS

PDF

76.5 KB Created: 2021-03-11 11:40:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e2343fb77724b39f4a3f4d4f6e11ca3 SHA-1: 134f060315dca81d0642472659db60cdc81a4f2a SHA-256: c06e3f367fd55b4b1fa9304d1491e3346885e9b2a9830375cdb41433ec629640
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. The document body, though heavily obfuscated, contains references to 'cheat engine' and 'apk', suggesting a lure for users seeking game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/123?utm_term=beach+buggy+racing+cheat+engine+apk
    • http://tomolijoponix.mypressonline.com/92497761159.pdf
    • http://xevusezes.medianewsonline.com/apresentao_institucional_da_empresa.pdf
    • http://wujejejifi.mygamesonline.org/how_do_u_play_cards_against_humanity_on_zoom.pdf
    • http://bosegabowatitup.iblogger.org/lawuxod.pdf
    • http://kidufamipowanot.mywebcommunity.org/35841109430.pdf
    • http://patimezo.22web.org/sears_craftsman_6-1_8_inch_jointer-planer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xumakomowi/robbery_bob_2_hack_game.pdf
    • https://s3.amazonaws.com/bezorito/32339179743.pdf
    • https://s3.amazonaws.com/purixifusipelid/85883690933.pdf
    • https://s3.amazonaws.com/vufupu/audient_asp8024_he_manual.pdf
    • https://s3.amazonaws.com/zunewidimem/5049193226.pdf
    • https://s3.amazonaws.com/fizup/bully_scholarship_game_pc.pdf
    • http://warufadul.rf.gd/torexewuv.pdf
    • http://wokarodefi.onlinewebshop.net/95103845270.pdf
    • https://s3.amazonaws.com/viwoxuz/29311400708.pdf
    • https://s3.amazonaws.com/dinisemowoge/rikumowo.pdf
    • https://s3.amazonaws.com/jixerubowi/9649748190.pdf
    • https://s3.amazonaws.com/divelatoxa/dopumutor.pdf
    • https://s3.amazonaws.com/jotizifime/63772902415.pdf
    • http://gosovugan.epizy.com/majakolekatuwamulaz.pdf
    • https://s3.amazonaws.com/fizufapu/329529157.pdf
    • https://s3.amazonaws.com/xajowu/4_grade_math_division_worksheets.pdf
    • https://s3.amazonaws.com/tugabijenovili/dishwasher_whirlpool_quiet_partner_ii_instruction_manual.pdf
    • http://puzexexaniledow.epizy.com/puwureserixi.pdf
    • https://s3.amazonaws.com/rolefosiju/revasalodisogalipobapi.pdf
    • https://s3.amazonaws.com/waduzirader/honors_biology_final_exam_review_packet_answers.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_off0000ec4b.bin
8fe8b33e9afed639b9f8ee403d86b0d12c1114b0a3cc86bc6dbc1be2b326acc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4B 5340 bytes
font_01_sfnt_off0000fe7c.bin
8a9f3c5544b91bcc3b644b31e0153832b610e1d5737f8475446d0fc53afd53c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE7C 11152 bytes

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