Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8bf60a29ed3fe0f…

MALICIOUS

PDF

85.8 KB Created: 2021-05-23 05:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 59ab85b9200b4c20d850fc92e9fa825a SHA-1: 9357a29eab05bb5c8f2ab282971f0b2a05ca4fac SHA-256: b8bf60a29ed3fe0fd748c02ff9353d6cafbcde886539b839a606df21cfb6a309
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to potentially malicious content, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The primary URL, 'https://fokemale.ru/strik?utm_term=garfield+2+full+movie+online+subtitrat', suggests a lure related to movie streaming, likely to trick users into downloading further malware or engaging in phishing. ClamAV detection and ML classification strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=garfield+2+full+movie+online+subtitrat PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378171/normal_604c9cc5f24d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495271/normal_5ffbef598216b.pdfIn PDF document text
    • https://sekojeti.weebly.com/uploads/1/3/4/5/134583019/dofodugof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375504/normal_603565707b87a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424981/normal_5fc7e50c0e081.pdfIn PDF document text
    • https://vugevosuza.weebly.com/uploads/1/3/5/3/135328642/xuraza-noridikexurev-jebuda-xokufozamazanos.pdfIn PDF document text
    • https://lurofigugibax.weebly.com/uploads/1/3/4/6/134686006/sobabewim-dawozo-nozoxiri.pdfIn PDF document text
    • https://zokejiwiperasuk.weebly.com/uploads/1/3/4/6/134668939/waxozenokewu-ramowimoki-pimemugol-xozaremevivemij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457572/normal_5fd95b9cb3ac0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/share_chat_app_videos_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/starting_your_own_cleaning_business_how_much_to_charge.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/zusomizixokuni.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/60564527450.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/guardian_angel_caregivers.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/80297845724.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/74216958719.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/rabekewurevek.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/9773629260.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/koxabulewopovu.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/542400649.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/economically_weaker_section_form_haryana.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/61071168319.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/60886656768.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70B 5416 bytes
SHA-256: 3e7fe82e8c58276a838819acf4b2d729bb0a7f01e68d1346c9044cc50f59dce3
font_01_sfnt_off00010966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10966 12272 bytes
SHA-256: 2667e870731ffd97a1b810f6bf784dcaa5ff77cdd53527e09880f843b522393f
font_02_sfnt_off000131d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131D2 16340 bytes
SHA-256: f67214d392536aed347828afa08640e3dc4dd23a37c6559774c47aef118a4654

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