Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdb30e2f6cbfb379…

MALICIOUS

PDF

70.0 KB Created: 2021-03-04 04:49:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0df51d6f3aa8c653cfe31d201dec336e SHA-1: 2ebae59fd1ed611431b4f59fc74d2e4a708dc193 SHA-256: cdb30e2f6cbfb3792ce19ce6aca3b0381aff15eb64c007598faf11208b52adf0
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagged as a phishing or callback lure. It contains numerous embedded URLs pointing to potentially malicious domains, suggesting an attempt to redirect the user to a phishing site or download further malware. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of embedded URLs indicates a likely attempt to exploit the user's trust by presenting a seemingly legitimate document that leads to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lozipotod.ru/123?utm_term=altec+bucket+truck+parts+manual
    • http://instgramcopyrightdispute.com/waneluresimipanibgjkm.pdf
    • http://fefiwizam.sportsontheweb.net/stock_market_tips_for_beginners_india.pdf
    • http://nowukusox.mypressonline.com/vikamotigegusezuxefujugi.pdf
    • https://static.s123-cdn-static.com/uploads/4501057/normal_5fde6b0ddf333.pdf
    • http://item-get.top/rudegutowirapekxkmvf.pdf
    • http://xxlmature.site/quadratic_equation_calculator_by_extracting_square_rootsuufg5.pdf
    • https://xavimunemu.weebly.com/uploads/1/3/2/8/132815343/5173993.pdf
    • http://lifeit.pro/39810391239mm6j9.pdf
    • http://varuzajuv.22web.org/what_is_a_visual_analysis.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://negumigimewote.onlinewebshop.net/pudif.pdf
    • http://xulezudo.epizy.com/who_got_sexiest_man_alive_2018.pdf
    • http://pogetowem.onlinewebshop.net/78070192048.pdf
    • http://kiwajuku.epizy.com/what_is_termination-at-will_rule.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_off0000d5d5.bin
ab1e625625e9d42bc8f6d709a508aed76ebb6743001cedb0da5332665c528d52		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D5 5272 bytes
font_01_sfnt_off0000e7a7.bin
b0a54d6b82691f35a1f5081abbf788e623c06ace5f3af9aa848f8b19246dbde2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A7 10648 bytes

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