Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67cd505e62a2e34…

MALICIOUS

PDF

70.4 KB Created: 2021-03-06 04:48:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: d60673889c171259a6b1d90041a7bca3 SHA-1: e4c1390c406ccda19addfd47670d0a59dab823ee SHA-256: f67cd505e62a2e3476e3366bbf6a228751df15723d732547266336744f8e45dc
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs suggests an attempt to redirect the user to a malicious 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://maypoin.ru/strik?utm_term=dexter+commercial+washer+water+valve PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409413/normal_5ffdf64831c20.pdfIn PDF document text
    • http://jadebey-x.com/where_is_the_nearest_fedex_pickupcr2h0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407306/normal_5fdbde30206bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393900/normal_5ff2e076e9b9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422135/normal_5fe4e2699becd.pdfIn PDF document text
    • http://avtoshtorki.shop/rolinoruporojisiveganujudho4m.pdfIn PDF document text
    • http://grigolia-studio.ru/diponisulurinewarahzrar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449998/normal_600714a279b64.pdfIn PDF document text
    • http://test123test.xyz/14463808670cr1w2.pdfIn PDF document text
    • https://gugukufetufa.weebly.com/uploads/1/3/4/3/134337187/kabuvaxeravimob_mamovasarati_polex_vonukufimasud.pdfIn PDF document text
    • https://nidegezepon.weebly.com/uploads/1/3/4/6/134650885/1369780.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://riwugenesujo.epizy.com/wegivirawinurowak.pdfIn PDF document text
    • https://c03439ef-6557-4199-865e-586791a52b6c.filesusr.com/ugd/6bb4a2_800c3b1682b541028c653d24e0170113.pdf?index=trueIn PDF document text
    • https://e590c0d9-b694-44fb-9862-47327b30d8b0.filesusr.com/ugd/89363e_6b561c15e9764509b6f436bc1d69f6b8.pdf?index=trueIn PDF document text
    • http://mezexefobotero.epizy.com/talovubiwukijijexure.pdfIn PDF document text
    • https://4adff18d-dc39-4349-be2c-eeb12737f1cb.filesusr.com/ugd/9117e0_dcbbe74e60d04fe98a7be70427206e89.pdf?index=trueIn PDF document text
    • https://78905da9-dd21-4190-abaa-c894c042e703.filesusr.com/ugd/851c7c_ec433278d7b04aa1a24e4032fedbb5f5.pdf?index=trueIn PDF document text
    • http://fuwekevozofil.rf.gd/duramumowujuvabi.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_off0000d4ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CE 5260 bytes
SHA-256: 4aeec62829e84b22b20ef61d0a4ac3f4d0a0f04e3318141b7a587ae13a23073f
font_01_sfnt_off0000e69f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69F 11136 bytes
SHA-256: 1b06b1f3db073de6bd691751d2094848213662d42d53707e33a0ae75ce70a6f0

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