Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ee57cce5d415163…

MALICIOUS

PDF

76.0 KB Created: 2021-03-31 08:36:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 21216ccdfdeb753a0f786113a9e6a442 SHA-1: 645c774d72eea40844f09ff83c9425c327f0c8eb SHA-256: 1ee57cce5d41516304b22087bc169692f4c0fc4ac6623fd90c4a76b3259b89b0
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to 'calligraphy writing styles' to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://fokemale.ru/award?keyword=calligraphy+writing+styles+pdf PDF link annotation
    • http://idealsit.space/cuisinart_coffee_maker_dcc_1200_partst8g2u.pdfIn PDF document text
    • http://nakozek.mypressonline.com/autodesk_inventor_animation_tutorial.pdfIn PDF document text
    • http://kapabifidi.sportsontheweb.net/51386357329.pdfIn PDF document text
    • http://youtube-subscribes.com/193341006323q390.pdfIn PDF document text
    • http://free-at.pro/49683477668jk8tn.pdfIn PDF document text
    • http://fukiwurezopukof.mywebcommunity.org/92453903809.pdfIn PDF document text
    • http://pokupka.space/how_to_use_power_cooker_for_roast5i75k.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/330573308490jmrr.pdfIn PDF document text
    • http://dronextactical.xyz/cub_scout_lion_leader_handbook5cb9f.pdfIn PDF document text
    • http://edaeda.moscow/the_originals_the_tale_of_two_wolves_review9i429.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lofunadex.myartsonline.com/99150301022.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/rilepukekamurafo.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/1587646026.pdfIn PDF document text
    • https://dd907c4b-492b-4b4d-bf3c-9f0b7a2bd2c7.filesusr.com/ugd/96a426_a35294b14cbc466098bba95ab15893f3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0457f94e-cb1e-43e0-84a5-0d61bcfd331c/51631827468.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/sweetened_almond_milk_nutrition_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1683a67d-ed0b-447c-a536-bb08477684a8/diviwuronisujegex.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/xiwaririfekekanabawo.pdfIn PDF document text
    • https://b6086c54-8ef4-40f3-ba18-bbbb993b339e.filesusr.com/ugd/36e927_a294b3ba653d4578bfa7ea99b457b64a.pdf?index=trueIn PDF document text
    • http://madepadejatutof.onlinewebshop.net/bukhari_sharif_jild_1.pdfIn PDF document text
    • https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_e34b396844414d31a6da4121a6bc2deb.pdf?index=trueIn PDF document text
    • https://7fad2989-91b8-457c-89bc-9a0e7aeef19f.filesusr.com/ugd/b03ff3_453e57068aa249259ad838796f29cfc3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/somamere/ggplot2_cheat_sheet_espaol.pdfIn 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_off0000ec7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7A 5404 bytes
SHA-256: c61367b522fb08baeb199a019a3aa745c67cb1ed46e5bb311cf06245abd87500
font_01_sfnt_off0000feea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEA 10616 bytes
SHA-256: 71a760a0709bfe238f2870382c6948322898d391a0ac37ba6e83364b8dccf710

Open this report in the interactive analyzer, or submit your own file for analysis.