Malicious PDF — malware analysis report

Static analysis result for SHA-256 389e78599fd7794b…

MALICIOUS

PDF

75.9 KB Created: 2021-03-10 09:07:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bbaab0faca6fc0cba45ee6efabefa40f SHA-1: bd5089dfa83de10ca16acd3c48d66913f4330458 SHA-256: 389e78599fd7794bb61012d5cbc083398f001da3d12f5846ffb4d2f7a8684a26
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is flagged as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs suggests the document is designed to redirect the user to a malicious site, likely for phishing or to download further malware. No scripts were extracted, but the PDF structure itself is suspicious.

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://soxebez.ru/123?utm_term=apache+cassandra++mac
    • http://pifedalune.medianewsonline.com/7307044370.pdf
    • http://metalllift.ru/yealink_t42s_datasheetyfxve.pdf
    • http://copyright-helps-team.com/harry_potter_and_the_order_of_the_phoenix_game_mac_downloadzk9p0.pdf
    • http://tdsevsvet.ru/zunerejijuzajipowuzeld32bh.pdf
    • http://tixshopclub.fun/gafapaf6awhh.pdf
    • http://loduwij.scienceontheweb.net/adjective_phrase_exercises.pdf
    • http://bigmagazin.xyz/sibunotelopovumulomobeka1hslu.pdf
    • https://cdn.sqhk.co/wagomito/jaifYic/coin_master_daily_free_spins_link_hack.pdf
    • http://idealica-italy.site/gugelenomiy2fcr.pdf
    • http://vidclips.design/hardies_cement_sheet_sizesh9veh.pdf
    • http://tersq.space/jewet6y80z.pdf
    • http://my-favshopc.online/marketing_plan_example_word4eybv.pdf
    • http://liolika-rsya.ru/cox_contour_2_guide_settingsneayp.pdf
    • http://sukuwodexi.scienceontheweb.net/41006591382.pdf
    • https://cdn.sqhk.co/motuwezelu/jeiiFjh/the_silent_age_2_walkthrough.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://f1e11ea9-a931-46ad-af30-391325c877dd.filesusr.com/ugd/423518_8ec30747c71441a283e09c329baccde1.pdf?index=true
    • https://69b3109a-7cce-4514-9193-d2106d9976ab.filesusr.com/ugd/3c2969_7e1ff8225b9942cbac9e4ae9f41616f4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/48a79910-d12a-452b-b6ff-9d7b4a8c2c13/13476702162.pdf
    • https://30cc9e9c-6145-4029-bfdc-d0561bdb3a10.filesusr.com/ugd/0dcf4b_567c7f0098784ea893cc04c0b9b8dc41.pdf?index=true
    • http://japinoxizidunub.myartsonline.com/foxaminekev.pdf
    • https://36622f5a-5a1b-41a5-aa98-965156e47ac2.filesusr.com/ugd/804ff6_3479045a297842c0a8ac14ddcf501cad.pdf?index=true
    • https://uploads.strikinglycdn.com/files/c986d706-a96b-4d7f-9f27-f04d92fd980c/quality_management_software_for_small_businesses.pdf
    • https://uploads.strikinglycdn.com/files/25378f88-03b5-4d8b-92bf-f1219eae77e9/gizewawupubarubalik.pdf
    • https://9a89a7da-ede3-42eb-a537-7416be21eb2d.filesusr.com/ugd/aaaf79_46e9f5408e19464284a62a004ea275f1.pdf?index=true
    • 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_off0000e9c6.bin
b48663c8827f061bf49016dac1dc356e5cd3d752b23e84682681329626673b96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9C6 5272 bytes
font_01_sfnt_off0000fb83.bin
830eea8e7e5500ba0bf3896afec756909e7107a88755e55d3af431479a37899c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB83 11396 bytes

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