Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e9723214b0aa6fc…

MALICIOUS

PDF

93.5 KB Created: 2021-03-26 04:39:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 93d62e5cfc7ef7856f4976d4019c004b SHA-1: 51adea7c7911aef2f2e8a12a8727b145f350c43a SHA-256: 4e9723214b0aa6fcbdf70a1a26894c0a15296a6d19b4278e222f7b2d8a4ec8b6
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jacksth.ru/aws?utm_term=download+unity+2d+assets+free PDF link annotation
    • https://cdn.sqhk.co/nuzinipaz/h32ijS5/minecraft_pixelmon_lucky_block_1._12_2_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tajixixejafi/8hbjAjj/domino_s_pizza_village_road_leland_nc.pdfIn PDF document text
    • http://monoga.space/94849766219pl9f3.pdfIn PDF document text
    • http://cosmicgig.com/24689447836xvvds.pdfIn PDF document text
    • http://instahelpforbusiness.com/cash_dozer_app_reviews5ajtz.pdfIn PDF document text
    • http://bupetud.xyz/drill_guide_jig_tool1j7if.pdfIn PDF document text
    • https://cdn.sqhk.co/vawikepaf/ggmibgc/59401530063.pdfIn PDF document text
    • http://kubifadim.iblogger.org/1328407329.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuwarikufaz.epizy.com/suduter.pdfIn PDF document text
    • https://e4034479-4ead-418b-af8c-5be8dc72bdbe.filesusr.com/ugd/1e8759_2332b27fb8ba4eb696ce12bc439464b1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xesigeze/mixevogirawewit.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/83303470823.pdfIn PDF document text
    • https://s3.amazonaws.com/nafoxuda/18400915780.pdfIn PDF document text
    • http://mabuwidutu.rf.gd/wabamofetetunivo.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/sukojekezezitolev.pdfIn PDF document text
    • https://s3.amazonaws.com/goveruduzewoxu/psycho_libro_robert_bloch.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/61470526635.pdfIn PDF document text
    • https://034b020c-baab-45d1-b3ff-c950d21f9178.filesusr.com/ugd/3c93bc_e100abc133794583affb6e7ddebc6794.pdf?index=trueIn PDF document text
    • https://ad843f61-c544-48d7-8cfb-3c048b9edb46.filesusr.com/ugd/0dd9ed_d8e6ccdbe436448c8ac55126a7b1d105.pdf?index=trueIn PDF document text
    • https://d6ac5066-27fc-4e71-a07d-b30af50dfe8b.filesusr.com/ugd/934fc3_6dd98ecf701a4c2a92bdf02e53f6b06c.pdf?index=trueIn PDF document text
    • http://welididoseburiv.epizy.com/zebosoxewugujevux.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/divinity_2_complete_crafting_guide.pdfIn PDF document text
    • https://204833c8-abda-4421-8777-5048ee7dd919.filesusr.com/ugd/e30b7a_5d3d4dfa5279420ab065e51c48c1bdb3.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000121b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121B6 5224 bytes
SHA-256: 1135ef96c7b883c54a41d718fd7ca8646f3958a0298e4ac0c7bf1273b072a4b4
font_01_sfnt_off000133a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133A9 23248 bytes
SHA-256: 3b1a3aec70595ce01328d560ea005b5f350e3b9f24981b217513210a14c8a53d

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