Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac99924cbd68294…

MALICIOUS

PDF

80.2 KB Created: 2021-03-15 06:42:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75cf7d3d882f3605c3e34738e9d55dca SHA-1: 9c197c0d732f88fea9f9e64c7a790c77de5a65a8 SHA-256: 3ac99924cbd682944436bc46bcc0e97037d2e91c83f2754dd9eccbac7547b89c
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs that lead to potentially malicious sites, disguised as content such as game guides or software downloads. The presence of these links suggests the document is designed to trick users into visiting compromised or malicious web pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://nipisod.ru/123?utm_term=brave+frontier+2+unit+guide
    • http://gatorama.site/fallout_4_goty_dlc_not_working_ps4k22bv.pdf
    • http://hairhome.moscow/the_dragon_reborn_audiobook_download5hhyb.pdf
    • http://dreamingdeveloper.com/harry_potter_5th_book_release_dateyei9m.pdf
    • http://wotedogupowu.sportsontheweb.net/74020010750.pdf
    • http://x-bionic.shop/superposition_theorem_examplesqhsxb.pdf
    • http://grigolia-studio.ru/zuwezumakeij10o.pdf
    • http://sfhgfje5df.xyz/buwufukosonabusabixumrk4q.pdf
    • http://xemokajoled.medianewsonline.com/boy_scout_popcorn_order_form_2020.pdf
    • http://rasudilikid.mywebcommunity.org/18894283553.pdf
    • http://labiosdewonda.com/hi_standard_sentinel_r-101_serial_numberskr486.pdf
    • http://jiludedo.iblogger.org/87043453136.pdf
    • http://vumogegotawugub.mypressonline.com/xadubofonozinopewolafog.pdf
    • http://ag-management.space/78165177693j5x6t.pdf
    • http://ibkreactiva2020.com/92369716085da2ha.pdf
    • http://zipufofofize.22web.org/live_tv_android_app_australia.pdf
    • http://wabiferofuvud.mygamesonline.org/cfa_level_2_curriculum_2020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pavujiniz/baylor_football_uniforms_2017.pdf
    • https://s3.amazonaws.com/papuja/fedex_kinkos_business_card_template.pdf
    • http://kexibuxufo.epizy.com/thrillist_nyc_weekend_guide.pdf
    • http://pudosuvosav.atwebpages.com/how_to_setup_garmin_delta_xc.pdf
    • http://benamow.myartsonline.com/why_is_there_black_marks_on_my_teeth.pdf
    • http://bijexeb.rf.gd/23554843891.pdf
    • http://neguxonef.rf.gd/bharatiya_vidya_bhavan_sanskrit_books.pdf
    • https://s3.amazonaws.com/dazuxujepov/how_much_does_it_cost_to_fix_a_stove_burner.pdf
    • https://s3.amazonaws.com/tobojelusiwi/gagexigovoxosuwaju.pdf
    • http://zotubune.myartsonline.com/79313086639.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee91.bin
e828eadb44695e80760684fd66b048e845aeb142894bb83c436a9cdb69b5ddf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE91 4076 bytes
font_01_sfnt_off0000fcf0.bin
9f5a2bde00ab51abf3034bf1fc318564d589820c98005649880e7fd8286296b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF0 5104 bytes
font_02_sfnt_off00010e70.bin
1c20fe9276159fb4ee6e1d51d9374f795ddba6be293297b4df8b1957307ea3fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E70 10388 bytes

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