Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2fb43efb07e7f4…

MALICIOUS

PDF

86.4 KB Created: 2021-03-24 18:59:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4dfa692a0a232cc09f60e6ce32d0b065 SHA-1: 4043132f19df100ca0f216b6bd2ac374368a7a2f SHA-256: ed2fb43efb07e7f43b7d838daffff26ec05b4d7084f5661bd769a1b6616784ec
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 URL, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a social engineering tactic to trick the user into interacting with the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://midufefew.ru/wix?keyword=impossible+test+3+answers+fish+food
    • http://mizusugazalu.22web.org/44381369809.pdf
    • http://milesnires.xyz/basketball_trading_cards_value_freeneyly.pdf
    • https://cdn-cms.f-static.net/uploads/4402517/normal_6058930d5e000.pdf
    • https://cdn-cms.f-static.net/uploads/4476582/normal_6032938dd7f39.pdf
    • https://cdn-cms.f-static.net/uploads/4412606/normal_602b4963df5fc.pdf
    • http://sarhello.online/natofofupukonorvpd05.pdf
    • http://dafesoxexigu.medianewsonline.com/36440820508.pdf
    • http://kalukoroduro.mygamesonline.org/dictionnaire_mdical_franais_allemand.pdf
    • http://mofopafilubo.22web.org/13342323462.pdf
    • https://cdn-cms.f-static.net/uploads/4462697/normal_605a9198b0fa1.pdf
    • http://usesoda.pro/majatosaxokuweno2l3gx.pdf
    • https://cdn-cms.f-static.net/uploads/4495838/normal_60517fa8c7a3d.pdf
    • https://static.s123-cdn-static.com/uploads/4476954/normal_5ff579b78480f.pdf
    • http://mirror-x.org/pazamowuzugolaxaduzuzg94br.pdf
    • https://cdn-cms.f-static.net/uploads/4459324/normal_601c8bd52eaea.pdf
    • http://ketotreno.buzz/rozatizesulrbpw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bunedupa.epizy.com/xaramutaposorazigazos.pdf
    • https://1cdd1dcb-54a5-4750-95ad-c4cce9a68cd1.filesusr.com/ugd/1e32c2_dbf4a753644a4af6ae3bd5cd0a1f04c5.pdf?index=true
    • http://reniwen.rf.gd/73516398159.pdf
    • https://6c49ff76-e13b-46da-8354-2e633d56f736.filesusr.com/ugd/211c2d_dd0231b62c1e48afb98cfd18248149b2.pdf?index=true
    • https://06e27459-8a58-4d01-a48e-f853eab966f6.filesusr.com/ugd/55f1a0_467711c038e242baa7c51407996be375.pdf?index=true
    • http://telifujovemevo.atwebpages.com/37156067087.pdf
    • https://6200e599-3f2f-4e3e-ab45-e6977ed7e777.filesusr.com/ugd/f8de3e_c048260da75f480182878712697809cd.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ef8.bin
bf2ff5c4cfaab642568cff5035bb38ecf3d4290edf9890050e70ceeb4fafc16f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EF8 5616 bytes
font_01_sfnt_off000121ed.bin
62d7f3ba85dfbd52d08e68030560dbfbb743270e4e2bf4d564e6932d8e9b8897		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121ED 11932 bytes

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