Malicious PDF — malware analysis report

Static analysis result for SHA-256 90543e604d7d9c3b…

MALICIOUS

PDF

72.4 KB Created: 2021-02-27 13:51:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7648a8f7d621d5c1d10808da79a32696 SHA-1: 18df34aab6880457efc4629b872f72f75de3038b SHA-256: 90543e604d7d9c3b38ffd784c896e183ca9bd2582df774f5575812a6912a2a82
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an external URI pointing to a suspicious URL, likely intended to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to '8 ball pool easy hack club', aiming to trick users into clicking the embedded link.

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://golowaki.ru/wix?keyword=8+ball+pool+easy+hack+club PDF link annotation
    • https://cdn.sqhk.co/muzedikerum/ghib4vC/43190232065.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379611/normal_5ff9da97d0e77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388052/normal_5ff13d3359745.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/jigIhbx/98275826166.pdfIn PDF document text
    • https://cdn.sqhk.co/kavesake/jdISBtd/elearning_ngo_i_ng_hu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417999/normal_60011e741a8a5.pdfIn PDF document text
    • https://cdn.sqhk.co/woragumokewi/heigibp/52855816883.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501484/normal_5fe96cc3696cf.pdfIn PDF document text
    • https://cdn.sqhk.co/mogizilo/dUTYhjK/two_points_that_are_noncollinear.pdfIn PDF document text
    • https://cdn.sqhk.co/jezaziritav/igwHjev/xoxawasofenokefubemofodaw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5fcf395732b8d.pdfIn PDF document text
    • https://cdn.sqhk.co/suxumeva/gpjfT5K/national_anthem_of_finland_youtube.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483867/normal_5ffdf0ef87699.pdfIn PDF document text
    • https://cdn.sqhk.co/puburasar/mhbhagc/luvapiwazabawimaxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448991/normal_6036075cbb3ac.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/hUPjjic/46611818791.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479235/normal_5fc7fa16c1542.pdfIn PDF document text
    • https://cdn.sqhk.co/rigizisojix/Qibhdhe/chickens_that_lay_pink_eggs_for_sale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikubub.onlinewebshop.net/61369912634.pdfIn PDF document text
    • http://vawerudarasikow.myartsonline.com/4148761930.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_off0000d4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CE 5328 bytes
SHA-256: dfdb1a3672eb2ff7192aeedaaa8a7878873b823247d1dd8797524a5584b3e165
font_01_sfnt_off0000e6e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E9 2092 bytes
SHA-256: 9fcfd2b2c12c9d480c0beec3ee39f05b9e518edc5177a7a5fcc68dff0371f8a2
font_02_sfnt_off0000f08a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF08A 10444 bytes
SHA-256: 8b01cc836737bd7f5a377108e17631005f031e8d7e8d5634a3c3c790ccc2d3e1

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