Malicious PDF — malware analysis report

Static analysis result for SHA-256 f101d07048517779…

MALICIOUS

PDF

83.1 KB Created: 2021-03-23 21:52:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71f5a9aeb017859fa54ea5fc86e8be55 SHA-1: f09514406b71f31812a8e45d8b49cf8bf2515dd3 SHA-256: f101d0704851777958ab48f35ede245eb24cc88f748839f42f434eb4700000e2
96 Risk Score

Malware Insights

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

The sample is a PDF file flagged by ClamAV and an ML classifier as malicious. It contains an embedded URI pointing to a suspicious domain, 'botokaw.ru', which is likely used to host a malicious payload or phishing content. The document body is heavily obfuscated, but the presence of the external URI and the high risk score suggest a phishing or malware delivery attempt. No scripts were extracted, but the PDF structure itself is being leveraged for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://botokaw.ru/strik?utm_term=2002+ford+explorer+sport+liftgate+glass+hinge
    • http://draiwenstore.online/the_entertainer_lyrics_the_sting5fi6w.pdf
    • http://nefritthebestthing.site/gevagefegosuvadinowusikviu8.pdf
    • http://kimidenexikox.getenjoyment.net/jobibidebuzinaweze.pdf
    • http://blablablacar.online/notice_to_quit_assured_shorthold_tenancy_form34ckp.pdf
    • http://erogan-encolumbia.site/kagetogesirilurekokingq5s.pdf
    • http://marketeuro.pro/masterbuilt_electric_smoker_low_tempix74w.pdf
    • http://getbuiss.online/zimalajibovh7uk6.pdf
    • http://bamupiwabibajew.mywebcommunity.org/gujarati_aarti_sangrah.pdf
    • http://toxusuzom.mypressonline.com/carson_dellosa_cd_4301_answer_key.pdf
    • http://1xbets-regs.site/free_water_parks_in_west_palm_beachszpvx.pdf
    • http://totalcreditcheck.info/nodufalabsf4uu.pdf
    • http://tertov.xyz/17676764940swhrg.pdf
    • http://lalabomujulimof.mywebcommunity.org/ximigemaju.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/zetituri/jozejebozelubipakefu.pdf
    • http://wifudozakiteg.epizy.com/elastic_beanstalk_and_cloudformation.pdf
    • http://sudexixurijaxoz.atwebpages.com/can_we_live_on_triton_moon.pdf
    • http://munoxefarofow.rf.gd/free_fileminimizer_pictures_full_version.pdf
    • https://s3.amazonaws.com/febopa/emoji_background_photo_editor_app_free.pdf
    • https://63d876aa-455f-4c41-9c38-50747f3e0b95.filesusr.com/ugd/a220d5_6f8193592be74aa6a60048bf3a5380f6.pdf?index=true
    • http://gebopotaxe.rf.gd/vegarevunetorajov.pdf
    • https://s3.amazonaws.com/donukadizolin/folefaregutuwatix.pdf
    • http://nadedafusefemej.rf.gd/subtitle_indonesia_before_sunrise_1995.pdf
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_c4ffe0297b7a4eaf91622ef3f7c8c6d2.pdf?index=true
    • http://midelex.epizy.com/twitter_chronological_timeline_android.pdf
    • https://s3.amazonaws.com/vatosolikijike/map_of_the_world_showing_continents_oceans_and_seas.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6d1.bin
2c6b41a7843d0cf9c4dec8de8bd668f14d999a04fc418350f80766348c106b26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D1 5336 bytes
font_01_sfnt_off000108e3.bin
26cd815890d7c93f9985697898c81bf88fb3094c659961c6e7f7efc0d5badba9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108E3 11876 bytes
font_02_sfnt_off00013063.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13063 4324 bytes

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