Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0df610abf5978f3…

MALICIOUS

PDF

73.9 KB Created: 2021-03-02 00:50:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8609e7871b4ec1fcaa91a887ac362d82 SHA-1: 4e3def0524e58302ee1610e2df064518b238b2cf SHA-256: f0df610abf5978f3e7557f2503d7d1db74be8aff5521ce5bd86733d4c20e7b78
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an embedded external URI pointing to a suspicious domain, which is also listed as a high-risk URL. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, appears to contain text related to puppy training costs, suggesting a phishing or scam lure.

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://nipisod.ru/strik?utm_term=how+much+does+puppy+training+classes+cost PDF link annotation
    • https://cdn.sqhk.co/gizoxemovefi/iigjhjx/golden_boot_award_2018_19.pdfIn PDF document text
    • http://fipizilemuwob.medianewsonline.com/2020_toyota_camry_xse_red_interior_price.pdfIn PDF document text
    • http://jujovobima.getenjoyment.net/3736207016.pdfIn PDF document text
    • https://cdn.sqhk.co/jimatoju/fxideLU/koduvemubixovubasix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474222/normal_602a594a2cbc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421350/normal_602d3e1581263.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/resumen_del_capitulo_6_de_el_principe_de_la_niebla.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/kugelilizibuwum/algebraic_expressions_class_7_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/asus_eeebook_x205ta_windows_10_update.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/camera_360_graus_panoramica_para_celular_android.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/how_to_use_chefs_choice_knife_sharpener_100.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/wazofutefunobixit.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/49799486228.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/toddler_khaki_uniform_skirt.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/59381505819.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/how_to_say_yes_you_can_in_french.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_off0000e1f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F3 5644 bytes
SHA-256: f08139ad3d55dc55dd50dedf365a036e5e189d023fb5acf0b199fc046f66efef
font_01_sfnt_off0000f50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50F 11084 bytes
SHA-256: d176ce4e14a27bcc5335b3b6f7b04aa2adc2782a3dc19e6aefc58915ad3dc119

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