Malicious PDF — malware analysis report

Static analysis result for SHA-256 914f10836ac4a3ad…

MALICIOUS

PDF

97.2 KB Created: 2021-03-27 23:07:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22770fd6fc0982202c8259a7e3a9ff54 SHA-1: 9ab89edff1fcad4b290152024e7dff6b05a1dad1 SHA-256: 914f10836ac4a3adcdaf386ca59d98cce16c0fc1d6fd86b6fadd086744879f15
104 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and numerous other extracted URLs suggest the document is designed to redirect users to malicious sites, likely for phishing or to download further malware. The 'theme hotel hacked weebly' lure in the document body, combined with the PDF_URI heuristic, points towards a phishing or social engineering attack.

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://xezojetit.ru/wix?keyword=theme+hotel+hacked+weebly
    • http://gromstroy.com/21458110188s6yuu.pdf
    • http://odemebayisitrafik.com/samsung_galaxy_s9_charging_port_repair8cblq.pdf
    • https://cdn-cms.f-static.net/uploads/4371240/normal_600fa480883bf.pdf
    • http://wekeb.space/holden_barina_2006_manualbiq4r.pdf
    • https://cdn-cms.f-static.net/uploads/4450733/normal_6049844a22a33.pdf
    • http://testvvd.xyz/why_is_the_term_primary_group_important_to_differential_association_theoryu5b6t.pdf
    • http://copytoshka.ru/brother_p-touch_1750_user_manualk3psi.pdf
    • http://pearhaidhr.fun/google_search_for_only_filessyzmj.pdf
    • http://montana-media.com/67098107042lucny.pdf
    • http://naturapple.space/download_gta_vice_city_cheats_pchws8m.pdf
    • https://cdn-cms.f-static.net/uploads/4490936/normal_600e44387d78a.pdf
    • http://sosyaltakipcipanelin.com/114235523535aqwl.pdf
    • https://cdn-cms.f-static.net/uploads/4468531/normal_605ae0a68d6af.pdf
    • http://getliterate.online/bypass_printer_ink_levels_canonfm6ek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/80b148f4-8ab6-4e5b-a5b4-db11c8431723/nancy_drew_and_the_hidden_staircase.pdf
    • https://uploads.strikinglycdn.com/files/45deb1ed-a970-4ca9-8138-d6174a2f5323/ssr_125_engine_specs.pdf
    • https://uploads.strikinglycdn.com/files/94ddabf2-75d9-456e-aa20-17906f7d34b6/31447675025.pdf
    • https://uploads.strikinglycdn.com/files/d11d0ef0-f2fc-4e4c-a907-f4bc316c66cc/yamaha_mg124cx_for_sale.pdf
    • https://uploads.strikinglycdn.com/files/1c4d4d7f-7591-477a-acc1-1bca52631ed6/how_to_type_latin_letters.pdf
    • https://uploads.strikinglycdn.com/files/213878cd-8b56-4c63-be23-ee4b5422c6c3/apollo_twin_x_duo_vs_quad_reddit.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_off00013bf9.bin
912fd5a325e687c464e6534a2a7b88c31e11c87eab4e459771d341f99c443595		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BF9 5252 bytes
font_01_sfnt_off00014dc4.bin
f7d6136cc4476cdf7e8db7037c894b545a564e023b93c2a11369fad34a10c978		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14DC4 11868 bytes

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