Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7ce304f3fb90f2…

MALICIOUS

PDF

70.6 KB Created: 2021-04-05 07:38:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3002ba84fa0dcbd1f152f66e53d2fbfe SHA-1: 93afe4290326302c81138041c0b77bc79b24f4fe SHA-256: 8e7ce304f3fb90f2076066b21af9fe0d3b23a819d5c83d15d32283ebe0f6ef11
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users by presenting a seemingly innocuous topic to drive them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://mezovuduw.ru/aws?utm_term=how+to+program+a+beam+remote+control
    • https://static.s123-cdn-static.com/uploads/4411500/normal_5fcf5cb87eb58.pdf
    • http://shoplus.info/bcbs_of_michigan_prior_authorization_radiologysqqpd.pdf
    • https://cdn-cms.f-static.net/uploads/4459188/normal_604e3b1b6f8b3.pdf
    • http://bonboxstudio.com/89296753190etuxi.pdf
    • https://cdn.sqhk.co/viposaxa/WLheXxP/juzomuxogevarokiw.pdf
    • https://cdn.sqhk.co/nuxarufodir/e2ijhii/59446708736.pdf
    • http://ppl-nutrshopfit.website/67347046811edcza.pdf
    • https://cdn.sqhk.co/verexoleki/yjeUhfF/votija.pdf
    • https://cdn.sqhk.co/fimegasaz/b2qjgs4/72075449518.pdf
    • https://cdn.sqhk.co/zarepowake/iidNSid/83567629764.pdf
    • https://cdn-cms.f-static.net/uploads/4480591/normal_5fea2dc821917.pdf
    • http://quickstore.pro/rarebuputekotapamaj9xl8.pdf
    • http://selectgetc.top/89355892149mf0d7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e3ece8b6-de61-4561-a513-67418b9e50a6/the_practice_tv_show.pdf
    • https://uploads.strikinglycdn.com/files/a0f622d4-7e0a-4dc1-bdba-0524183ed7a0/catia_tutorial_free_download.pdf
    • https://uploads.strikinglycdn.com/files/d3eded59-601d-41d8-9146-74dfa4b98b66/7156176533.pdf
    • https://s3.amazonaws.com/bisute/spotify_web_player_songs.pdf
    • https://uploads.strikinglycdn.com/files/2434f431-79b7-460a-8bb7-925ca6e4093a/coleman_powermate_5000_maxa_er_plus_owners_manual.pdf
    • https://uploads.strikinglycdn.com/files/7e30cf9c-8a92-4c5c-aaf3-5e808c7960b6/lekigevekurekefelopo.pdf
    • https://s3.amazonaws.com/votubukaxogilix/photo_emulsion_sheets_india.pdf
    • https://uploads.strikinglycdn.com/files/72950541-cbdc-470b-861f-03479afb097e/how_to_sign_on_clerk_on_sharp_xe-a207.pdf
    • https://uploads.strikinglycdn.com/files/cb5751f9-3a7d-4965-a584-c23026533977/sibobubibilo.pdf
    • https://s3.amazonaws.com/tikoweravisixu/how_to_print_directions_only_on_google_maps.pdf
    • https://s3.amazonaws.com/mizeteb/61666679529.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_off0000d7bd.bin
3ecdf20547c962b549e1f5c5a6569edb884de9adb909a05387b0c66797c6e2dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BD 5268 bytes
font_01_sfnt_off0000e9a4.bin
1662899b185eb05485e330e7a11fcb7f34db7a433178028f8b0a200732e725a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A4 10188 bytes

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