Malicious PDF — malware analysis report

Static analysis result for SHA-256 f08a30aa7b0e57c2…

MALICIOUS

PDF

69.8 KB Created: 2021-04-03 22:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bceea984818543487c29d92db8b1c34 SHA-1: e1e08847ea26d211592757fd0b869eebfbbc2ccb SHA-256: f08a30aa7b0e57c22747301e6469a24eb6f93c8baa6f353dc7b24798a9b964a1
104 Risk Score

Malware Insights

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

The file is a PDF that contains multiple embedded URLs, one of which is explicitly flagged as an external URI. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains text that suggests a lure for a "Batman symbol template pdf", which is then associated with download links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dafemum.ru/award?keyword=batman+symbol+template+pdf
    • http://udilische.club/what_is_the_formula_for_calculating_average_velocity_of_a_moving_object6rz5b.pdf
    • https://static.s123-cdn-static.com/uploads/4379969/normal_6000c87adfad0.pdf
    • http://bitcoinchat.fun/22755326697kk5pb.pdf
    • https://cdn.sqhk.co/julukimesof/dIhj9ih/31641824116.pdf
    • http://rosutob.getenjoyment.net/kolupirijurifimalofomiz.pdf
    • http://sabumow.mygamesonline.org/87308390392.pdf
    • https://cdn.sqhk.co/rutesawir/VJgcuKc/archery_equipment_for_sale_melbourne.pdf
    • http://znakomstva18x.site/zokagazafaxizigizeligofikzvn0z.pdf
    • https://cdn.sqhk.co/pujixefan/ijhjjcF/megacraft_pocket_edition_apk_download.pdf
    • http://f1l3download.site/what_age_is_the_bfg_book_suitable_for05ikr.pdf
    • https://cdn.sqhk.co/nupozifulija/je8gg3f/90214995372.pdf
    • https://cdn.sqhk.co/xovenekot/QiaheBs/us_virus_deaths_today.pdf
    • https://cdn.sqhk.co/ronuwimo/icxNHgd/discord_mee6_bot_level_up.pdf
    • https://cdn-cms.f-static.net/uploads/4379968/normal_600fdfd826468.pdf
    • https://cdn.sqhk.co/ponajadu/glZIWMI/jilula.pdf
    • https://cdn-cms.f-static.net/uploads/4369185/normal_600e59e390aad.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5057f8b4-f1ae-4f82-bc7e-e40f63a720f1/zufufobebakobaruxex.pdf
    • https://uploads.strikinglycdn.com/files/e20d08e0-36d1-4ad3-b698-1c37fea24f38/zexekisudex.pdf
    • http://pozijawikubinun.myartsonline.com/fonobibejomevuxaxemupume.pdf
    • https://uploads.strikinglycdn.com/files/7747f396-dc54-4690-8e46-3eb7b9a01626/vafogutuzawuf.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_off0000d6c9.bin
c550e868b898ff0792b1652a137125a992249d1011f86f3ac3e33ac6fc25731a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C9 5380 bytes
font_01_sfnt_off0000e90e.bin
b221f6d68d5fdb3bc19515da3e3bb672d865f57f95ea14e09ee166491c99db14		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE90E 9932 bytes

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