Malicious PDF — malware analysis report

Static analysis result for SHA-256 b329bca1d72c72b6…

MALICIOUS

PDF

72.5 KB Created: 2021-04-11 16:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 79a9089dc71db0127e76f20a76015781 SHA-1: 5307019b22e643b559a2d78485935a94fc119c01 SHA-256: b329bca1d72c72b633cb5920e1b346d584a0d9a3a6abc1b849fd648dcc7615d9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/strik?utm_term=boss+fs-6+dual+footswitch+cable PDF link annotation
    • http://argo-tourism.com/pobetexezesum4qvno.pdfIn PDF document text
    • http://apparentlyopt.com/22019730472odz8o.pdfIn PDF document text
    • http://vesajob.getenjoyment.net/tovafuwopokemuziledexone.pdfIn PDF document text
    • http://jolidulikan.scienceontheweb.net/skyfall_piano_sheet_music_easy.pdfIn PDF document text
    • http://mazafaka69pussy.online/9692739890vxk3j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413978/normal_6002476eb492e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456996/normal_5ffb6b55771fd.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/38131200578.pdfIn PDF document text
    • http://waverufusufafuv.scienceontheweb.net/free_download_english_to_english_dictionary.pdfIn PDF document text
    • https://gozivuwedigati.weebly.com/uploads/1/3/4/6/134612943/1425733.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456398/normal_5ff1b402c0bdd.pdfIn PDF document text
    • https://rorobobadewa.weebly.com/uploads/1/3/1/1/131164171/1d56748.pdfIn PDF document text
    • https://xotizirew.weebly.com/uploads/1/3/1/8/131855992/nubetivesanuk_padutevawura_bawuje.pdfIn PDF document text
    • https://gafixipen.weebly.com/uploads/1/3/4/4/134444756/69426.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/tosego/format_of_formal_letter_to_a_friend.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/catalogo_esselunga_2013.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/evanescence_free_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/99872847668.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/tafidilimexaseme.pdfIn PDF document text
    • http://nopugorib.onlinewebshop.net/rubulidiropisavoken.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_off0000d79f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79F 5480 bytes
SHA-256: fe4c46cb49e9b11ae7a2d200a405255ca2be7d6fa6fb8a4f67a7e2563c1c9dc9
font_01_sfnt_off0000ea62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA62 11848 bytes
SHA-256: ac7caf766d7d818e1cae786e9291e92dca0ab3325039254fa50107dcb838195e

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