Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d92724932da43c8…

MALICIOUS

PDF

74.1 KB Created: 2021-01-20 04:51:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 152dbb1ea579f04b4939f2527154f8b2 SHA-1: ef9c95364f36912e9a5e891ae0bd7d1d0d1be174 SHA-256: 0d92724932da43c86c8d504e122725739f8e4a15e87074f05c9db7ead20ed4da
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://seumenha.ru/123?utm_term=non+excepted+interstate+definition', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains text related to 'Non excepted interstate definition', suggesting a lure to trick the user into clicking the malicious link.

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://seumenha.ru/123?utm_term=non+excepted+interstate+definition PDF link annotation
    • https://site-1230008.mozfiles.com/files/1230008/carp_agrarian_reform.pdfIn PDF document text
    • https://site-1174852.mozfiles.com/files/1174852/devidupeporugiraga.pdfIn PDF document text
    • https://site-1179842.mozfiles.com/files/1179842/denamafafi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421478/normal_5fd066b754835.pdfIn PDF document text
    • https://site-1218567.mozfiles.com/files/1218567/bike_hill_racing.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423443/normal_5fdd9c26ac402.pdfIn PDF document text
    • https://site-1166687.mozfiles.com/files/1166687/86413817094.pdfIn PDF document text
    • https://site-1167931.mozfiles.com/files/1167931/slice_raw_meat_food_processor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421365/normal_5f99c30915919.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/sulasatevirexo/26991705487.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/classified_balance_sheet_financial_accounting.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/avg_usb_scanner_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/21802654718.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/wosiwajogu.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/buscar_mi_iphone_por_android.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/best_excel_budget_template_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/rti_online_form_in_hindi.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_off0000e5f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F2 5156 bytes
SHA-256: 425f2cf52b4e38e76a46471c3869dddb138edc549a50331422729b5076404743
font_01_sfnt_off0000f795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF795 10476 bytes
SHA-256: a0e2d13e1e7ba479fda3ab5c77c4b9c1c010228aac706bda689ce355939d2ecf

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