Malicious PDF — malware analysis report

Static analysis result for SHA-256 3274bec7d33114e0…

MALICIOUS

PDF

78.9 KB Created: 2021-04-26 17:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c753d38f52742270be2332e2505f8e8f SHA-1: 29883e6f54c2917124ad6a6ba521b538adbbd48f SHA-256: 3274bec7d33114e00d3ad63e5655e9a4ee5cc9cbf9ab782a2f41a9718afe17e8
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, appears to be related to the APA citation of the Declaration of Independence, suggesting a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/strik?utm_term=how+do+you+cite+the+declaration+of+independence+apa
    • https://cdn.sqhk.co/kivipemo/CFgdiND/wobokosomapodotiw.pdf
    • https://cdn.sqhk.co/noxibogalu/aDeHeji/fezakagujilasaxavito.pdf
    • http://wapividazofar.scienceontheweb.net/zovefi.pdf
    • https://cdn.sqhk.co/vilomikov/dAhbsul/ultimate_photo_blender_pro_apk.pdf
    • https://cdn.sqhk.co/tabewinudeka/LjjPgju/79463000566.pdf
    • https://cdn.sqhk.co/numokafas/iMrDOic/among_us._dev_skin_god.pdf
    • http://tetupamino.mywebcommunity.org/84212849853.pdf
    • http://vipadobotisituz.mygamesonline.org/the_talented_tenth_web_dubois.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/votubukaxogilix/togulafunewolu.pdf
    • https://s3.amazonaws.com/tesotiwapax/tajutesa.pdf
    • https://uploads.strikinglycdn.com/files/6cd0c3dd-480a-44dc-a33d-368d4fc0f3df/2927421829.pdf
    • https://uploads.strikinglycdn.com/files/ac784c09-33ef-4f9b-a420-78114533412e/samsung_rfg297hdrs_freezer_not_working.pdf
    • https://uploads.strikinglycdn.com/files/3d1b7adb-ee41-4875-a0ad-282410977b5d/how_to_download_final_cut_pro_10.4.7_for_free.pdf
    • https://s3.amazonaws.com/fulazelof/solugarexibunaredam.pdf
    • http://moxosutemow.onlinewebshop.net/writing_equations_of_parallel_and_perpendicular_lines.pdf
    • https://uploads.strikinglycdn.com/files/e560fb74-44df-4fe7-8c6a-03d39f4677ea/86991587132.pdf
    • https://s3.amazonaws.com/remeranexe/57682466493.pdf
    • https://s3.amazonaws.com/xipavir/95781606457.pdf
    • https://uploads.strikinglycdn.com/files/b3b90613-7ce1-48be-8f6b-fa64d5310902/68078967689.pdf
    • https://uploads.strikinglycdn.com/files/f2ff7f48-d4e6-4582-8fab-be7ebe045498/kenmore_elite_dishwasher_manual_troubleshooting.pdf
    • https://uploads.strikinglycdn.com/files/6d05f0c4-90f8-4cc2-a910-17d1210613df/how_to_cite_a_personal_conversation_in_apa_7.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_off0000f64b.bin
135519e5f0e5f57c98de64e8a3b42ce81980a76498b6cf7e861e6984772125b0
pdf-font-stream PDF embedded font (sfnt) at offset 0xF64B 5220 bytes
font_01_sfnt_off0001081d.bin
bc29bd7137d2529f356014d5bfd0c0c11e083dbfc3dfba28ae14796cb15a2b1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x1081D 11116 bytes