Malicious PDF — malware analysis report

Static analysis result for SHA-256 4142b69a2edaa157…

MALICIOUS

PDF

68.7 KB Created: 2020-12-07 04:44:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a768365419e220f4aa232a2c0fc79631 SHA-1: 3688038272e80bde2ec1d9906482f090649b9f83 SHA-256: 4142b69a2edaa157e889ca18c40662ad7a6b16839f38dc44326e13ddd1ed6790
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a phishing page. The PDF structure and embedded content suggest it's part of a phishing campaign, potentially using social engineering to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/strik?utm_term=graduation+%2528friends+forever%2529+-+vitamin+c+hd PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd7b11a9-cda8-427a-baba-ff5d703f0835/nespresso_inissia_descaling_instructions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5850fa5bc066edfc4d8cb/t/5fc98bfe2f5dbb44b7732065/1607044095375/delete_background_apps_iphone_x.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f6dbfc2-0bff-4194-a843-d379087b26a4/18768091822.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c6e78ef7301f8b326b4b/t/5fcd762433187724c406e751/1607300644685/hotels_near_daytona_international_speedway_fl.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc32ae812facd59cebbb095/t/5fc375e94f983757204c3310/1606645225739/udel_parking_pass.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1b6e4397200107e34052/1606228846905/plants_of_the_gods.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53a9d116eb00e3c685617/t/5fc63f1f4e98326c02e62eb6/1606827808131/vpn_private_internet_access_mod_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50ae4a13a450bab0f051b/t/5fcd60391e1a4d7de13d1384/1607295033741/zaxorofawukibabob.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6453512facd59ced19c35/t/5fcd5f537ae85b53b2a3cd8a/1607294803656/advertising_agencies_nyc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10dd611f6a419848684c6/t/5fc15f9e1972c46e3cd23c36/1606508446566/sun_rock_retreat.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2f58b2cf09257bd796827/t/5fc5dd78cb3e0f57711b02cb/1606802815163/spartanburg_county_register_of_deeds_filing_fees.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9717b8ea-f669-4f3c-9245-2d707efcaaf5/wrongful_death_attorney_new_orleans.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5c22f3de5e49b55bbdaf/1606376484319/zetelutazerusamezulezoz.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/maths_riddles_for_class_5_with_answers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD040 5508 bytes
SHA-256: 8f829257139216385a292939c2d8081d901cc151cd783be01b470f9a54d645e1
font_01_sfnt_off0000e2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F5 10316 bytes
SHA-256: cf7ac8a48ae91f6cf33efcf2e3d05e8a7026a69c68d12aec9c07120a70af1d54

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