Malicious PDF — malware analysis report

Static analysis result for SHA-256 11547d80680f89f5…

MALICIOUS

PDF

75.6 KB Created: 2021-05-15 05:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 004b4ec68d6b82a18566956fc449cb0e SHA-1: b02af927a39702dda2f7b767e8471e22b9d74151 SHA-256: 11547d80680f89f586eba8ba6619f2e037ee59e14bd9bc9d2503a4760dfd0852
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically 'https://jumiwimov.ru/strik?utm_term=scarlett+2i4+first+gen', suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains metadata related to 'wkhtmltopdf' and a date, hinting at its construction. The primary attack pattern involves luring users to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jumiwimov.ru/strik?utm_term=scarlett+2i4+first+gen
    • http://zuvilivupeke.iblogger.org/zexipadiw.pdf
    • http://rafafezut.iblogger.org/barbie_coloring_pages.pdf
    • https://cdn.sqhk.co/rozesivotix/jgjeiji/zarekawigupovida.pdf
    • http://pozesex.iblogger.org/lotto_shoes_size_guide.pdf
    • https://cdn.sqhk.co/zafupusapun/5mhjhbo/xugaxovun.pdf
    • http://wudibuniwiwu.22web.org/65704510171.pdf
    • http://bobatukuxoto.iblogger.org/my_talking_angela_hack_apk_latest.pdf
    • https://cdn-cms.f-static.net/uploads/4409619/normal_605bfbe44bcf7.pdf
    • https://cdn-cms.f-static.net/uploads/4375204/normal_60544915e3819.pdf
    • https://cdn.sqhk.co/bupedamarib/idfyp1g/32423042488.pdf
    • https://cdn.sqhk.co/nudabesawi/qnjfLgf/ego_sword_idle_sword_clicker_mod_apk.pdf
    • http://lexanizisujufum.66ghz.com/roll20_official_pathfinder_character_sheet.pdf
    • https://static.s123-cdn-static.com/uploads/4380405/normal_5ffbaf6435b9e.pdf
    • https://cdn.sqhk.co/rufebumu/3gjsmje/sisters_oregon_real_estate_rentals.pdf
    • http://ziponep.22web.org/falatunajejebalesufofawem.pdf
    • http://potajin.iblogger.org/14107248779.pdf
    • https://cdn-cms.f-static.net/uploads/4477873/normal_60430d73e78aa.pdf
    • https://cdn-cms.f-static.net/uploads/4388174/normal_602b8587b607f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://romugonixop.rf.gd/97501808405.pdf
    • http://rufabojeta.epizy.com/salanaxiwe.pdf
    • http://jomeruwiw.epizy.com/alfred_adler_books.pdf
    • https://uploads.strikinglycdn.com/files/0e276de6-29ac-4874-ab79-07fc908c415f/fibanukudoj.pdf
    • http://ximizadoxa.epizy.com/xfinity_error_code_xre-22_srm-8001.pdf
    • https://uploads.strikinglycdn.com/files/27f98d75-2b88-43e8-afde-8d3a04e89105/estudios_biblicos_adventistas_online.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_off0000e4c4.bin
f2e085b5e1f03275ab1c2449dd77fce954eaa2a54dbe6e5a549843ed191deef3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C4 5372 bytes
font_01_sfnt_off0000f722.bin
df9b332c38dbbce8660b5333d866d5c8c8b664bff3b1336b247332d2f18dfd43		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF722 12228 bytes

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