Malicious PDF — malware analysis report

Static analysis result for SHA-256 067e27b5b8deb287…

MALICIOUS

PDF

80.6 KB Created: 2020-12-25 05:37:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bc4620680829580007a4ab961ba1a30d SHA-1: bd0294b74cf706956533a9173418993425caf7b8 SHA-256: 067e27b5b8deb287086bfdd44f6c5b2d85deddd8c432636ebef2e8ac3426d9fc
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical finding for a link farm containing 30 external PDF links. The ML classifier also returned a high confidence score for maliciousness. The embedded URLs suggest an attempt to redirect users to potentially harmful content, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/aws?utm_term=autumn%2527+s+concerto+episode+1+eng+sub PDF link annotation
    • https://garusase.weebly.com/uploads/1/3/4/6/134634063/medanufa_gilekadivuzaf_vuzesasu.pdfIn PDF document text
    • https://belujewirozem.weebly.com/uploads/1/3/2/6/132681559/dugikixonegela.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467036/normal_5fc5951fa87db.pdfIn PDF document text
    • https://pigupapizot.weebly.com/uploads/1/3/4/4/134480908/b33b4ecd.pdfIn PDF document text
    • https://pujapuvefebawu.weebly.com/uploads/1/3/4/5/134581836/7751383.pdfIn PDF document text
    • https://telozigigozato.weebly.com/uploads/1/3/4/3/134310186/ace7c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5fbde16aea405.pdfIn PDF document text
    • https://bobejezesolaz.weebly.com/uploads/1/3/4/6/134622741/5821393.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459777/normal_5fba4016b36ef.pdfIn PDF document text
    • https://neremepapo.weebly.com/uploads/1/3/4/6/134653798/be11dc995836b7c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/satuja/73460047872.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/sample_authorization_form_for_direct_deposit.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/50166207389.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/66674917265.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/xavezafavizabikexelekopi.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/pdf_to_word_converter_free_mac_download.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/antgeno_e_anticorpo.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB8 3608 bytes
SHA-256: a81a58e94b23423ec227aded0347db323320cc5c77aa850ef299f9e74943b316
font_01_sfnt_off0000ea90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA90 5368 bytes
SHA-256: f260e122ce7e8fa22851b554af93c1d01352b910873257238d2e347b3038e168
font_02_sfnt_off0000fcbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBD 6648 bytes
SHA-256: a343fe701a4fc76e84bb42dd1ed8ca1b4c9638dfd78aed0db1ffc2cd0e303a4d
font_03_sfnt_off00010e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E64 11732 bytes
SHA-256: bbd14dbf2b7eff5a350f0cdb320a89384f5fb6bf2b6cbd7fd95530c5cde007b8

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