Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c16208ee413db6a…

MALICIOUS

PDF

146.9 KB Created: 2021-03-20 22:01:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 008d6e841c22e455d2c00ba54e5bc916 SHA-1: 503a57ff6b16d98843f37d2db7da3618f19bad78 SHA-256: 5c16208ee413db6a9a05bb2592a115cc18fad95038281ae663377ed557c13cab
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high probability of malicious intent. The embedded URL `https://nipisod.ru/wix?keyword=winx+club+flora` suggests a lure related to 'Winx Club Flora' to entice users to visit a potentially malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or malware distribution attempt, likely leveraging a client-side exploit or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=winx+club+flora PDF link annotation
    • http://tortomsk.ru/nolasabijivifu2engw.pdfIn PDF document text
    • http://aycotoro7.xyz/170759741065tumq.pdfIn PDF document text
    • http://winoraama.space/vupib46daw.pdfIn PDF document text
    • http://pet-guru.shop/does_tp_link_smart_plug_work_with_alexa145oh.pdfIn PDF document text
    • http://damvglaz0.xyz/71352297429yl057.pdfIn PDF document text
    • https://cdn.sqhk.co/bugininaxi/gg2jeid/pentagon_federal_credit_union_new_car_loan_rates.pdfIn PDF document text
    • https://cdn.sqhk.co/xedufoga/yhbjcqB/the_shadow_sun_apk_mod.pdfIn PDF document text
    • http://digtalcaliper09.xyz/nezenivisaweturuzukapekpa6ti.pdfIn PDF document text
    • https://cdn.sqhk.co/zoribakim/2jhcjhi/gipubupepumavezelerezizu.pdfIn PDF document text
    • http://gutprod.xyz/bibanongxjim.pdfIn PDF document text
    • http://fukiwurezopukof.mywebcommunity.org/58185150384.pdfIn PDF document text
    • http://spindlndou.space/12293404560902zm.pdfIn PDF document text
    • http://triple-doska4.club/pes_club_manager_download_pcv6tcl.pdfIn PDF document text
    • http://draiwenstore.online/zunijelonelete87g2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pusebirenox.myartsonline.com/95749820876.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/bakawexifixikubapal.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/eccentricities_of_a_nightingale_script.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/31415400604.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/raber.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/dekilipumemebetesefob.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/doraemon_nobita_s_dinosaur.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/34055733378.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_off000204c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x204C8 4916 bytes
SHA-256: 95ac00e0d042cd72e1ebe1c87a3f49a10ac5ac4017dd32c1fc75486a70b2c8a7
font_01_sfnt_off000215a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x215A9 12752 bytes
SHA-256: 7073d114f620fc572e1b1f97beb79d55c169cd8ad48d9f61b5915a2aa253d8a8

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