Malicious PDF — malware analysis report

Static analysis result for SHA-256 72c826bbfd041410…

MALICIOUS

PDF

71.8 KB Created: 2021-03-19 13:37:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e0f42aa2c35e5978cda792f3f239b5d7 SHA-1: a06d40c6de36678456c7e484b4c4205285b026f4 SHA-256: 72c826bbfd041410a00218210555536381fda4bfef97a2ed2cda976253b59a2c
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV, specifically identified as Pdf.Phishing.Trojan. It contains an embedded URI pointing to a suspicious URL, likely intended to host a phishing page or malware. The document body, though heavily obfuscated, suggests a lure related to a product manual, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/strik?utm_term=pocket+juice+endurance+12000mah+manual PDF link annotation
    • http://salestore.pro/yo_amo_los_diagnosticos_facebookw9s1m.pdfIn PDF document text
    • http://kpovli.ru/danganronpa_episode_3_google_drive8is66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459027/normal_5ffd0dfd39bd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447251/normal_604b7b505c815.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463791/normal_601580944b1fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412183/normal_6008ea5d12268.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445871/normal_5fe8bf9c35380.pdfIn PDF document text
    • http://mybiol.site/heywood_internal_combustion_engine_fundamentals_second_editionv80zt.pdfIn PDF document text
    • http://likelid.xyz/vaponiwebopavdt9eg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369160/normal_5fe49afe53689.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454052/normal_5ff6b74684d4b.pdfIn PDF document text
    • http://inmyshtangen.xyz/joseph_campbell_hero_with_a_thousand_faces_summaryonpbv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://43dda2ad-fadc-418c-a2d5-4b96cca2ed60.filesusr.com/ugd/6eca9c_dccb77b3d33148a981849f538a6035fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tulosa/lularowimaw.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/beetle_crazy_cup_pc_game.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/the_psychology_of_rumor_allport.pdfIn PDF document text
    • https://s3.amazonaws.com/tipikaxe/formative_assessment_tools_for_science.pdfIn PDF document text
    • https://d19688e0-347f-4d9d-8cb3-d47c6e049f3d.filesusr.com/ugd/c618e9_cd58f682f0df4fa5a0fba9307610f2ce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/pokemon_leaf_green_rom_coolrom.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC02 5348 bytes
SHA-256: d700f5e5ab847c92ed1f1671a6c2df2ec14ebfc40064ce3e707f3044a781a46c
font_01_sfnt_off0000ddfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFA 10740 bytes
SHA-256: 069e2d1efdd10f2a5f117cb6697769f3b97430031cb6e14dfa1d6091fc6c6d91
font_02_sfnt_off00010232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10232 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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