Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce17eba0e68b77b…

MALICIOUS

PDF

74.3 KB Created: 2021-05-31 23:54:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5b1462c56e5795d870ee4bdb9c0c602 SHA-1: b47600f839894523e9c546dfc5cccccfe9ba1c13 SHA-256: dce17eba0e68b77b5a60b091f8dc77913edfc9fcfef1031fc1458749088302eb
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or social engineering scheme. The document body, though heavily obfuscated, appears to be a lure related to dog health, intended to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://huntic.ru/pbw?utm_term=what+causes+crusty+sores+on+dogs
    • https://zelidewa.weebly.com/uploads/1/3/4/3/134371532/zatubugora.pdf
    • https://xawewidijaxiju.weebly.com/uploads/1/3/4/2/134266046/soturesufevebapelit.pdf
    • https://guvisine.weebly.com/uploads/1/3/4/5/134598756/6252344.pdf
    • https://fupelesanu.weebly.com/uploads/1/3/1/6/131606305/tagopaxew.pdf
    • https://cdn-cms.f-static.net/uploads/4527237/normal_603f4e8a03171.pdf
    • https://fewewoxeluvatu.weebly.com/uploads/1/3/4/3/134338934/40029b89.pdf
    • https://ritefebeg.weebly.com/uploads/1/3/5/3/135316582/dezojiwevafikar_makaxate.pdf
    • https://cdn-cms.f-static.net/uploads/4491933/normal_6042f240bb035.pdf
    • https://cdn-cms.f-static.net/uploads/4482405/normal_6053cb2bbf953.pdf
    • https://cdn-cms.f-static.net/uploads/4501660/normal_601b315fa685b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0edf77fe-410d-4f11-b8c8-2a87503c8c09/2000_ford_ranger_fuse_block_diagram.pdf
    • http://funinupun.pbworks.com/w/file/fetch/144425064/descargar_starcraft_portable_para_android.pdf
    • http://venatulafiz.pbworks.com/f/is_carbon_dioxide_an_ionic_or_covalent_bond.pdf
    • http://lekuzax.pbworks.com/f/fojevekemetenusurideko.pdf
    • https://uploads.strikinglycdn.com/files/81deb600-85b8-4bfd-b343-fbe4efcbecea/is_the_black_and_decker_matrix_any_good.pdf
    • https://uploads.strikinglycdn.com/files/69b8a787-4846-43ea-b62c-9627b8c2299e/what_are_the_best_management_consulting_firms.pdf
    • http://noxixap.pbworks.com/w/file/fetch/144426375/pdf_calendario_2020_mexico_para_imprimir_gratis_chile.pdf
    • http://wuxikadafi.pbworks.com/f/telujuwetip.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e6.bin
b8de4a808b3684a89e2f83a9e55335643b3ffc2af065317809a30424da666eb5
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E6 5284 bytes
font_01_sfnt_off0000fbeb.bin
7cde249925903125240aa02f6f9a1f96493cfc9c342935099f420e84600b1c7b
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBEB 9368 bytes