Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8147d02afad2b6…

MALICIOUS

PDF

78.8 KB Created: 2021-03-19 21:29:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ccac9ddb58e6c63c627b79e87067ff2e SHA-1: eda95d42d986b39bf196572b3357d07b6ab6464e SHA-256: 7f8147d02afad2b6d4d837b7d92b94a692694d088aa0138417699e4de55f25cd
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/123?utm_term=manualidades+originales+para+vender+en+navidad PDF link annotation
    • http://f13x.xyz/dragons_rise_of_berk_brawl_guidezmzd0.pdfIn PDF document text
    • http://fejavodexata.getenjoyment.net/xuxamuzebajafemevogejadu.pdfIn PDF document text
    • http://bapulesaj.mygamesonline.org/mama_ntilie.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/38961697387.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/acrylic_sheets_near_mechdxp.pdfIn PDF document text
    • http://sevoxotedeki.medianewsonline.com/zitoledolotibekemuna.pdfIn PDF document text
    • http://zugugalepew.mypressonline.com/84724629129.pdfIn PDF document text
    • http://femonejigajape.mywebcommunity.org/how_many_pages_are_in_the_series_of_unfortunate_events_book_2.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/vuterijoze/lumiwenum.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/56786505889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93027188-d3cd-4c9f-b86a-059b31e33b15/85549767004.pdfIn PDF document text
    • https://7404da97-7fcf-4d5f-9d5f-3f8644e6773a.filesusr.com/ugd/35f767_5f00cce3580a48f28484d633e49cd1d2.pdf?index=trueIn PDF document text
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_49323dca68ae4fe39e080ac891416ca4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e7b1e15-dcc4-4346-9922-6f8aaf37f580/the_conversion_code.pdfIn PDF document text
    • https://b860438a-ced3-4995-86f2-ad9a24e3f15c.filesusr.com/ugd/938eb2_546d76e99adc4843aa2f793923b64dd3.pdf?index=trueIn PDF document text
    • http://velelakolifuvu.onlinewebshop.net/ug_nx_assembly_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/jobuxuferubibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7604205-f356-4b27-b2b1-3fdabbfb05e5/32079193041.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/wikamozagetefe.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/46802708897.pdfIn PDF document text
    • https://f815f12b-539f-4060-8ed9-abd2caada31b.filesusr.com/ugd/ceb2e8_a9a9d353555b4abfa2b7d7110cc67093.pdf?index=trueIn 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_off0000f64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF64E 5192 bytes
SHA-256: 7efdbd7a16adad142488605d3d79a7c3be5d4f9177de26d1b4f4f1326bb80db7
font_01_sfnt_off0001081b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1081B 11656 bytes
SHA-256: 815b7d87112efcf5651980c978b8144d5250a239575e73787736565450d64f93

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