Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee524c1742fc29c…

MALICIOUS

PDF

83.2 KB Created: 2021-03-10 02:25:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e6753b93f63478a612f1f36890f6c56c SHA-1: 6454c7c7350fea60f9e9d696eeb7c250482c4bfc SHA-256: 3ee524c1742fc29cdaa7880ec13db30d6a01ba2bfa0cd65bd380c93f1255cc5b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'https://gimoguvi.ru/strik?utm_term=the+masque+of+the+red+death+characters+represent', which is a strong indicator of a phishing or malware distribution attempt. The document body is heavily obfuscated, but the presence of external URIs and the overall detection profile suggest a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/strik?utm_term=the+masque+of+the+red+death+characters+represent PDF link annotation
    • http://infonewstravel.com/mini_balenciaga_bag_dupe873ag.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/jeRihfi/bemewulazobefozira.pdfIn PDF document text
    • http://dalkomis.website/86729648507xjk.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/1oGZO01/minecraft_skyblock_maps_1._16._2.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/nPqggg9/judijojarugeju.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382771/normal_60072831bd061.pdfIn PDF document text
    • http://delaem-sami.online/surfside_beach_tx_tide_report1yi5k.pdfIn PDF document text
    • http://yandex-dostav.ru/minecraft_enchanting_guide_1._13iu8ya.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_601ecfcd41c10.pdfIn PDF document text
    • https://cdn.sqhk.co/gasubapo/Jjiibji/45826298328.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/doxifuba/zifezubutivura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/940aaa36-a5a2-42d0-a3a1-1dc7cca91f80/1860452148.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/fegifonu.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/squarespace_7._1_template_store.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/67199940242.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/11699855829.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/85610921136.pdfIn PDF document text
    • https://s3.amazonaws.com/nafibanefexex/vumaruzegixopokili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fc25d19-ffcf-4fd4-a2db-140539ebfd8b/dunkin_donuts_bagel_ingredients.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/how_much_does_it_cost_to_fix_ipod_nano_screen.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_off0001068b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1068B 5440 bytes
SHA-256: d02a6924e9071fb5127879f237979e09c89975a4a7ca1283270d068474b75434
font_01_sfnt_off000118d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118D9 11752 bytes
SHA-256: abd9d57518f039787683a7f662c8e89105cae506c19065d2d5ea44573ca85f72

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