Malicious PDF — malware analysis report

Static analysis result for SHA-256 14f97ac7b421c056…

MALICIOUS

PDF

88.8 KB Created: 2021-02-15 20:48:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: ec7430d01b43ed3c9bf1f19eec87d131 SHA-1: ac44d4dbc4b008877bf8f2d70ed6b6aef3066b5b SHA-256: 14f97ac7b421c056ae243b710c888b0d64cfbe293cc65b1db715397fec68b97d
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 an ML classifier indicated a high probability of maliciousness. An external URI was found embedded within the document, pointing to a suspicious domain. While no scripts were explicitly extracted, the presence of an embedded URI suggests an attempt to redirect the user to a malicious site, likely for phishing or to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=marshall%20rosenberg%20nonviolent%20communication%20youtube PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4402944/normal_5febae2081471.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467005/normal_5fe503918a227.pdfIn PDF document text
    • http://wotuxolis.iblogger.org/39044878461.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421208/normal_5ffe6ccc14991.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418369/normal_5fcd634b5a225.pdfIn PDF document text
    • http://kfcrabota.ru/chainsaw_file_guide_bunnings6wq1j.pdfIn PDF document text
    • http://grampus-shop.com/infinitive_phrases_exercises_with_answersors6e.pdfIn PDF document text
    • http://pe50off.pro/guilty_gear_accent_core_plus_story_guidezgnwx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467950/normal_5ff1ecd84c914.pdfIn PDF document text
    • http://fexefimaga.iblogger.org/63257423279.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
    • http://novosumagib.epizy.com/basketball_score_sheet_word_document.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/61502213345.pdfIn PDF document text
    • http://xibiwoziveva.epizy.com/53499753571.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/rofonixuninufazu.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/jovufasufesi.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/coroners_victoria_reportable_death.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/vajerojumafepibiborus.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_off0001117b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1117B 5404 bytes
SHA-256: 53705faea0839c8765b5ef006bf430c5ee3efcebce12eeac9e3ec60857532737
font_01_sfnt_off000123c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123C2 10540 bytes
SHA-256: 8c28319ce683367625b50767602356296d69add21d1a0b0e6f1f3d9760d124ab
font_02_sfnt_off00014794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14794 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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