Malicious PDF — malware analysis report

Static analysis result for SHA-256 48603657432fe605…

MALICIOUS

PDF

70.6 KB Created: 2021-06-01 04:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efd1bc7cedf48b1270a12213e4f2e152 SHA-1: 1cffda56ee7dc0fed1e765d11fb20f6a7c1f4cfd SHA-256: 48603657432fe605a49e682d5c537122939e0138e6c2c33adbc4cfa2890d4d9b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that, when visited, likely leads to a phishing or malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to 'Dunkin donuts iced cappuccino nutrition facts' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cructi.ru/pbw?utm_term=dunkin+donuts+iced+cappuccino+nutrition+facts
    • https://puzalanenezow.weebly.com/uploads/1/3/4/6/134693659/4491223.pdf
    • https://static.s123-cdn-static.com/uploads/4486743/normal_5ff28cc7a5f9d.pdf
    • https://cdn-cms.f-static.net/uploads/4498348/normal_604b0371d413a.pdf
    • https://static.s123-cdn-static.com/uploads/4368962/normal_5ffeb88132391.pdf
    • https://sifuzulujiw.weebly.com/uploads/1/3/4/7/134716539/415cf53e6a7ff00.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://gazumadu.pbworks.com/f/govinda_namalu_lyrics_in_telugu_mp3_free_download.pdf
    • https://uploads.strikinglycdn.com/files/f2313f50-6202-4590-bd8e-4fa231446c21/taylor_digital_kitchen_scale_instructions.pdf
    • http://giresizuloki.pbworks.com/f/gokorilikilobavujibefimi.pdf
    • https://uploads.strikinglycdn.com/files/9baf0231-d6ec-4f55-816d-f39865f6967e/kigenitowalovubemazisigiw.pdf
    • http://bojirakaj.pbworks.com/w/file/fetch/144424938/rajasthan_patrika_news_paper_today_in_hindi_barmer.pdf
    • https://uploads.strikinglycdn.com/files/86926b93-1ec4-4922-8c66-4334245961ff/gta_namaste_america_zip_download.pdf
    • http://paderukut.pbworks.com/w/file/fetch/144440355/pusalelegunija.pdf
    • https://uploads.strikinglycdn.com/files/1c403e5d-fa0b-4914-9304-95901b8619a2/pezesapujadik.pdf
    • http://togusan.pbworks.com/f/xisigewup.pdf
    • http://xetibubib.pbworks.com/w/file/fetch/144425430/49670497187.pdf
    • https://uploads.strikinglycdn.com/files/0cf9c045-a437-4ce5-922a-f14753b90944/42547333161.pdf
    • http://lebunurivugu.pbworks.com/f/tasilisotetovafa.pdf
    • http://xoxafepapesu.pbworks.com/w/file/fetch/144420369/vudosav.pdf
    • https://uploads.strikinglycdn.com/files/ef1dab73-86b3-4b3d-a7a4-2dbe87208267/dexuzisedaberurumizegeson.pdf
    • https://uploads.strikinglycdn.com/files/06760018-0718-4542-b044-6ed994aaed3b/mokutijelasemi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cae8.bin
dfbdceeb561f41510e9273b08580213daec0652268adf0b176ebb5323c80eea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE8 5060 bytes
font_01_sfnt_off0000dc2e.bin
096b64bb7ddfb035ea0b3edc9d602a50f6f5bd9277749943b8acad8a89cfeedc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2E 10052 bytes
font_02_sfnt_off0000feae.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAE 4324 bytes

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