Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb3ee5eacbe2d4b…

MALICIOUS

PDF

99.8 KB Created: 2021-03-16 19:36:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 20b7ffd18d165a83a677ba6a5e9bd209 SHA-1: 7fb359cfa1852fd19d607765dd9046737e6d95a7 SHA-256: 7cb3ee5eacbe2d4b1c300f3a7786a459aa51e7f4c2bfb3a5a01611371f6727a1
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 'botokaw.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was generated programmatically to appear as a document. The presence of embedded URLs and the nature of the ClamAV detection strongly indicate a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=mahatma+gandhi+history+in+kannada+pdf
    • https://vepemetamat.weebly.com/uploads/1/3/4/3/134354227/6931657.pdf
    • https://cdn.sqhk.co/mumesimasozo/dLbhe6B/crop_tops_without_strap.pdf
    • https://jizimixu.weebly.com/uploads/1/3/4/0/134095846/xekavuw-zofumudamaberu-mejasexub.pdf
    • https://getenulezawo.weebly.com/uploads/1/3/4/8/134897364/9907816.pdf
    • http://ziwavabewite.66ghz.com/busanakibesuzozawasavor.pdf
    • https://cdn.sqhk.co/povewepalu/jf8jajg/43853350160.pdf
    • https://cdn.sqhk.co/pesegozod/iTjgLhb/service_provider_company_names.pdf
    • https://cdn.sqhk.co/razulati/hdjdAij/sunset_restaurant_diner_brooklyn.pdf
    • https://cdn.sqhk.co/rubupidorinu/SZejdgc/34567094900.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/gudukupir/if_null_then_0_in_crystal_reports.pdf
    • https://s3.amazonaws.com/lolaritemukole/95557986358.pdf
    • https://uploads.strikinglycdn.com/files/8bfa1f15-653e-40ce-a1c7-a8e5de0f7a96/nordictrack_cx_925_elliptical_specs.pdf
    • http://kafudunafow.epizy.com/editable_weekly_meal_planner_template_word.pdf
    • https://s3.amazonaws.com/migivewuwe/alzheimer_s_prevention_food_guide.pdf
    • http://lemujiv.epizy.com/background_png_hd_free.pdf
    • https://uploads.strikinglycdn.com/files/3582a484-2bd0-4155-af24-24cd6ffe004c/bigepidivemukepobib.pdf
    • https://cb705b04-a904-4f11-a6d0-9d7e2b1ae5cb.filesusr.com/ugd/53498d_0c61df26e84f400d983755da4dc22bf6.pdf?index=true
    • http://xabuduzefaf.epizy.com/31728168101.pdf
    • https://s3.amazonaws.com/timeziso/i_am_coming_home_song_wrestlemania.pdf
    • https://s3.amazonaws.com/falufusu/foxtel_movies_disney_guide.pdf
    • https://bcd7deca-fd5d-492b-a220-d373ca515bc9.filesusr.com/ugd/12f4eb_2750fc49447e46f7b8bf233814ad7d21.pdf?index=true
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_1ccff64b697f4a6497b547a0779142de.pdf?index=true
    • https://d0fd53c2-66a5-49f7-a942-a4bfc50892a3.filesusr.com/ugd/11baf9_0e565dc1c70b4958b158cf4d6d07a84f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ce5e93b3-e7fb-49e3-a21c-fa7174c3c7cc/vukanoxidemoz.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_off00013aff.bin
aea67f1f4019aa0082d511ac07d0c4a88eeb689ca4b0bae1498c9d277cfb88b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AFF 5264 bytes
font_01_sfnt_off00014cc5.bin
0a40885182cce360d5cfdf39fe57a297fba67f25559be2f25065d27b2441f06f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CC5 10800 bytes
font_02_sfnt_off000171c9.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x171C9 4324 bytes

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