Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3a1bb653332fc0…

MALICIOUS

PDF

67.1 KB Created: 2021-03-19 08:42:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: a498fd3e08861f81e400ec7a2883e424 SHA-1: 6f3a9c8058d5332713b18e6634a83ddb9ed8aff2 SHA-256: 2c3a1bb653332fc0476db3424e82290f887e6e328d4479086d90bcf66774ba96
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=sunbeam+heater+blanket+blinking+light PDF link annotation
    • http://jovumelikas.22web.org/what_does_the_navajo_flag_stand_for.pdfIn PDF document text
    • https://cdn.sqhk.co/nevupediwix/Lqjjhcx/archery_bow_wall_hanger.pdfIn PDF document text
    • http://dewexipe.22web.org/xanokawixigaderone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389616/normal_6024305921fa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_60531a262f06c.pdfIn PDF document text
    • https://cdn.sqhk.co/mogidamiko/ijjfRhi/daravadabefofujo.pdfIn PDF document text
    • https://cdn.sqhk.co/sekigizakeku/42Rgjto/walmart_grocery_shopping_app_for_ipad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392237/normal_60007c3866a16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389097/normal_60280f75cd637.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416923/normal_60450aaae39f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366003/normal_5fc7e5bef2fcf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378855/normal_600135ff3e818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490953/normal_60370ff804eb7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pisik/42712738048.pdfIn PDF document text
    • https://49432a94-54bc-4d13-9d12-ea41d731e1b8.filesusr.com/ugd/a7c689_1a51679f8719468d9c8983b7dce050aa.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/65493196956.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/32857948316.pdfIn PDF document text
    • https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_4eca1a0a49f7447ab257a5fce62929be.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rumezo/what_organizations_will_pick_up_clothing_donations.pdfIn PDF document text
    • http://jidowadosul.epizy.com/bollywood_latest_video_songs_video_9._com.pdfIn PDF document text
    • https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_eb74cef5c1e44904b2ba351a3d71b298.pdf?index=trueIn PDF document text
    • http://vekujekodabudu.epizy.com/adapter_android_getview_not_called.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_off0000cb13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB13 5228 bytes
SHA-256: 35c70f217603486ad69fb993588b17f2c1e907e2c2546aaaa40d774944cfd75d
font_01_sfnt_off0000dcb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB4 10064 bytes
SHA-256: 2d604032abd8ec5e0ac38832de239fb96a11abd6a2a3159575c4d7c8447e8669

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