Malicious PDF — malware analysis report

Static analysis result for SHA-256 93510691db58db43…

MALICIOUS

PDF

80.0 KB Created: 2021-02-21 23:05:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f2ad07fa05060f9d4410e872d3894f1d SHA-1: b2104d5e2d6a3c974dc29b8f859bffc22ac7c48a SHA-256: 93510691db58db43c0da6aadb1aed896de1d4404049341f7256d641bbbfcd8d1
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to a coffee maker part. The presence of multiple suspicious URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

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://bologen.ru/strik?utm_term=cooks+coffee+maker+carafe+replacement PDF link annotation
    • https://cdn.sqhk.co/fotenulutis/RlIogcY/kaiser_permanente_flu_shot_2020_georgia.pdfIn PDF document text
    • https://cdn.sqhk.co/guvawatuzax/NqUibBj/tufaxuwutatuxa.pdfIn PDF document text
    • https://cdn.sqhk.co/vatomepipiw/m7ahcA1/44347388768.pdfIn PDF document text
    • https://cdn.sqhk.co/mumaxeje/6QIJcid/galaxy_shooter_adventure_mod_apk.pdfIn PDF document text
    • http://flowerport.market/950029943435e9aw.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://s3.amazonaws.com/sabegokek/97513312138.pdfIn PDF document text
    • http://dimegebewode.epizy.com/moto_g_3rd_gen_price_flipkart.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/nepotezimanizuxitabigokuf.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/govafaneguku.pdfIn PDF document text
    • http://kanisal.epizy.com/dha_bahawalpur_map.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/m-_toluic_acid_solubility_in_chloroform.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/bakery_story_2_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/beholder_full_apk_free.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_off0000f020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF020 4988 bytes
SHA-256: fa4dc91b58dedc54836840f57f759a3b7c5cc07f4575dea418e3ce8847adbcb2
font_01_sfnt_off00010100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10100 10580 bytes
SHA-256: 956a8637a0bccb886da395eedf7b47ed40c6aaac7fcfa93adaa0c437bdd1686a
font_02_sfnt_off000124be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124BE 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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