Malicious PDF — malware analysis report

Static analysis result for SHA-256 15d9c8ca1ccbe31a…

MALICIOUS

PDF

65.1 KB Created: 2020-12-03 09:48:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d775990e8bab80159b2e48a40a440f99 SHA-1: 16c46e555121ec754bb0824978485693936e7a5e SHA-256: 15d9c8ca1ccbe31ad62e4d6a8b910f2d5d34cca7ca66a5ebc1453223f679d9bc
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to '2 days to go clipart' and the authoring application 'wkhtmltopdf', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/123?utm_term=2+days+to+go+clipart PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4491159/normal_5fc22bc912b07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376606/normal_5f91499b1029e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379048/normal_5f94cb90375ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366639/normal_5f884eeddbb98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369663/normal_5fc5ca9e10ea2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407733/normal_5faafaa33afce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374359/normal_5fc4892346ebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2d0f931-66ff-40d4-ac63-03ab1e3e8f1e/53854577826.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc33b8b3dfdd95b60e431f6/t/5fc53b274f98375720894178/1606761257875/nejidalodatedu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10b4527a199023ab623ef/t/5fc740b4bfb90028be4e2ad6/1606893749598/unlimited_free_vpn_betternet_extension.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/fll_jr_mission_moon_instructions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0012c12facd59cea80d2a/t/5fc0da2418e72e5fdbf73f5e/1606474276264/90007354148.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/botany_worksheets_for_kids.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/28926987338.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d4752bbd7406580625ec/t/5fc3d450cb3e0f5771c55d4b/1606669393047/jesse_stone_sea_change_cast.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfe7e212facd59cea75dab/t/5fc16e01bc819f1cf40e4e85/1606512129662/group_of_birds_crossword_clue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/613f3ace-7b3e-4385-8f46-da159ff01fe4/93699902660.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_off0000c249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC249 5380 bytes
SHA-256: d466052cdfd9e3137343472838297687ecf11e0ec81223ae9c6801756ea5cb09
font_01_sfnt_off0000d4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4AC 10060 bytes
SHA-256: 464141e0c7a00f3e041240d17cfefe4280b8e257619a651404232e7b2f25104d

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