Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ade80c97cfc19a…

MALICIOUS

PDF

83.4 KB Created: 2021-06-01 02:34:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35d8ab34de2905170b99ef633bfddd34 SHA-1: b48551c3af45e0e9ac1a4827948d0af6d8133435 SHA-256: b2ade80c97cfc19ac0676cb51f35af7b2a7cd031407f3c6b2d3fddc17a08016e
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An embedded URI points to 'https://pixomot.ru/pbw?utm_term=where+is+the+product+key+for+windows+10+pro', which is likely a phishing lure or a distribution point for further malware. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was generated programmatically.

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://pixomot.ru/pbw?utm_term=where+is+the+product+key+for+windows+10+pro
    • https://nodekisoguzila.weebly.com/uploads/1/3/5/3/135313862/koxali_moligefigabi_lirovivijatefuf_nijorekaxufome.pdf
    • https://cdn-cms.f-static.net/uploads/4424672/normal_5fe83d599e88f.pdf
    • https://cdn-cms.f-static.net/uploads/4427783/normal_60501032d30f8.pdf
    • https://cdn-cms.f-static.net/uploads/4462678/normal_6049598ea40f9.pdf
    • https://sofubile.weebly.com/uploads/1/3/4/3/134380394/faduwujoso.pdf
    • https://cdn-cms.f-static.net/uploads/4498324/normal_6063ac32ef257.pdf
    • https://static.s123-cdn-static.com/uploads/4376125/normal_5fe3f2619cf23.pdf
    • https://static.s123-cdn-static.com/uploads/4384299/normal_5fceaf3749951.pdf
    • https://cdn-cms.f-static.net/uploads/4464053/normal_604fb5383e08e.pdf
    • https://static.s123-cdn-static-d.com/uploads/4403818/normal_60b2bbb1bda2f.pdf
    • https://rogidalot.weebly.com/uploads/1/3/1/6/131636841/2841957.pdf
    • https://nagaleburanab.weebly.com/uploads/1/3/4/3/134379557/risesubevukeropab.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e0951256-638a-4142-b21b-a881f50579a4/how_long_to_build_kallax.pdf
    • http://wozixokumo.pbworks.com/f/what_does_522_mean_on_jewelry.pdf
    • http://niwomif.pbworks.com/w/file/fetch/144425892/microsoft_visual_c_2015_redistributable_package_x64_windows_8.1.pdf
    • http://wekibivu.pbworks.com/f/51528154063.pdf
    • https://uploads.strikinglycdn.com/files/e7e2e7c0-8d95-4f62-8f59-def779472d52/general_knowledge_questions_and_answers_free_download_in_hindi.pdf
    • https://uploads.strikinglycdn.com/files/67013bae-3013-4c64-ac04-74e01afd6418/21135278118.pdf
    • https://uploads.strikinglycdn.com/files/63ccc5cb-f2c4-4dbe-988c-cac84f947fcc/masonic_rules_of_conduct.pdf
    • http://nigezid.pbworks.com/f/jorumamapajeliwazozidu.pdf
    • https://uploads.strikinglycdn.com/files/382f28fc-a883-456c-a43d-5c5b71b3acbb/wixutukaga.pdf
    • https://uploads.strikinglycdn.com/files/879d77f6-ec3d-4c04-80f7-0e8953ca715f/yamaha_mg124cx_mixer_price.pdf
    • https://uploads.strikinglycdn.com/files/6f72926d-b162-4523-ae2b-7c55dceeb58b/65419752811.pdf
    • http://foziwedugumu.pbworks.com/f/abo_and_rh_blood_typing_lab_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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1cd.bin
5b9b44f5d50113c99c521ce00ba8729c7024e5168bf5b8b5f3201b03cbec4798		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CD 5468 bytes
font_01_sfnt_off00010490.bin
ee5b032623f6baacfbbd54661456a5337b7278a0225a0451414640159a878871		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10490 11028 bytes
font_02_sfnt_off00012a57.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A57 16164 bytes

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