Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf8aa203168ea1ea…

MALICIOUS

PDF

92.8 KB Created: 2021-02-28 21:19:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b09a35afd4f2ebc9ea65cdc06e62a58d SHA-1: 87c6b5bbc5d8da0af017be5ef9794bbf16a3300d SHA-256: bf8aa203168ea1ea67a1fa1d1a3ce2f12611c3571c2e106377453aae02ddaaf5
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, 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. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit users through social engineering, possibly by masquerading as a legitimate document to trick them into visiting a malicious site.

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://resalured.ru/123?utm_term=radio+shack+mpa+250a+specs PDF link annotation
    • https://cdn.sqhk.co/dofexoxev/gGKhJhd/wufowedesorizobapasefaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/xutijexop/icTgchc/aesthetic_backgrounds_iphone_6s.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/sX6ZigB/easy_vanilla_mug_cake_recipe_no_egg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449973/normal_60242035c85b9.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/7hiZiiM/cowboy_golf_club_discounts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416935/normal_5fcf8316680a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468563/normal_60273db86c673.pdfIn PDF document text
    • https://cdn.sqhk.co/vexorikodo/fig110W/58358702320.pdfIn PDF document text
    • http://evgeniy-semenenko.ru/dworkin_laws_empireadu1g.pdfIn PDF document text
    • https://cdn.sqhk.co/kifateten/O9uQgdc/las_vegas_vacation_packages_all_inclusive.pdfIn PDF document text
    • https://cdn.sqhk.co/xumelesep/c1iigdH/15146382580.pdfIn PDF document text
    • http://boforotaje.mywebcommunity.org/simbolos_de_los_diagramas_de_flujo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445129/normal_6032a23ee55d6.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
    • http://gaxilitexu.onlinewebshop.net/why_is_my_samsung_tab_3_running_slow.pdfIn PDF document text
    • http://sogivuwe.onlinewebshop.net/68007821604.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_off00011ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EF5 5256 bytes
SHA-256: 37559e508fd9656bc0dacf099f5e83c783dbdc8fe752fa2126908d213ca654ce
font_01_sfnt_off000130d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130D7 11120 bytes
SHA-256: 7064a4aa7073d5e05eb164360f1d7be4b2b54c566f44df3c775f3429b9add86f
font_02_sfnt_off00015674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15674 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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