Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a58332da073958…

MALICIOUS

PDF

65.5 KB Created: 2020-12-20 12:14:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2f91c441ec7dee47e379fdea7c1f4834 SHA-1: 73a55609150a7a1b906f0dc941289590f516300d SHA-256: 88a58332da0739587ab96acb76c6860fac75652363afb9a864dddc1b1e613ba3
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though partially corrupted, contains text related to 'credit score ranges', suggesting a lure to entice users to click 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://traffnew.ru/123?utm_term=830+credit+score+ranges PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375525/normal_5fc8266729d79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491159/normal_5fcb373810ef4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/d2d8365b-a9e3-4991-91ba-90281d8a4092/legends_of_aria_macro_program.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/vertical_timeline_ppt_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/about_me_page_teacher_portfolio.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/rotolazawumizawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a6511a1-11fb-4b60-83f8-603208c04bfa/namekuzizotovol.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/winnie_the_pooh_fabric_flannel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92e256ce-b65d-4a6f-a82e-4d1f77094777/46303874199.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c10bdda7-e540-4e43-980d-4c45dac7039f/gijidutesazotovikozurar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65e8b5bc-58ff-4223-8340-87f884ea4f40/vudiraje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9e1e73d-f95c-4980-b75a-2b977d6be8d5/99972096360.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdec2aa0172f85bb32b3e9e/t/5fdee1f97185ee572d536e7f/1608442361954/batman_arkham_city_game_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/washington_department_of_licensing_kennewick_hours.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6F3 5268 bytes
SHA-256: ac6e6ef2c970056efead2e77226aa1c18dde88327771fb65f919d8bb4c5f2f2f
font_01_sfnt_off0000c8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D6 10036 bytes
SHA-256: 596b83a5417e814b82e037c597cc9e5d366a734321a143506907ecc422a0e5a2
font_02_sfnt_off0000eb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB32 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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