Malicious PDF — malware analysis report

Static analysis result for SHA-256 9035138ee1913542…

MALICIOUS

PDF

77.9 KB Created: 2021-03-13 21:08:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0bd4010c0ed5ffd9e51270f9bdf1ff7 SHA-1: 15f243cc92402b7025857f8b2595d60d1927613d SHA-256: 9035138ee1913542a1fc6e7e944100bdf15b918e1758f9c2bf854790a6722058
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://xezojetit.ru/wix?keyword=color+guard+captain+essay', suggesting a phishing attempt or a lure to a malicious website. The document body, though heavily obfuscated, contains text related to 'color guard captain essay', likely used as a pretext to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://xezojetit.ru/wix?keyword=color+guard+captain+essay
    • http://ilkertr.shop/scrum_burndown_chart_excelw9tfv.pdf
    • https://static.s123-cdn-static.com/uploads/4469143/normal_5fca9dc465782.pdf
    • https://cdn-cms.f-static.net/uploads/4412391/normal_6025318d17616.pdf
    • https://cdn-cms.f-static.net/uploads/4421476/normal_60207fc7cad8a.pdf
    • https://cdn-cms.f-static.net/uploads/4392664/normal_602e34986b8cf.pdf
    • https://cdn-cms.f-static.net/uploads/4452837/normal_6044221b150ff.pdf
    • https://cdn-cms.f-static.net/uploads/4501963/normal_5fea2103bce42.pdf
    • http://3gusevshop.website/gotixulawerepesikinuzenuw3dkrm.pdf
    • https://cdn-cms.f-static.net/uploads/4376619/normal_60389310ed602.pdf
    • https://static.s123-cdn-static.com/uploads/4478670/normal_5fcf43b83b01e.pdf
    • https://static.s123-cdn-static.com/uploads/4454277/normal_5ff6919b51573.pdf
    • https://cdn-cms.f-static.net/uploads/4386606/normal_600bab9789333.pdf
    • http://stnold.com/oxford_english_for_cambridge_primary_550z03.pdf
    • https://static.s123-cdn-static.com/uploads/4366965/normal_60020c0792f86.pdf
    • http://sweetmeet.online/how_to_do_statistical_analysisyw3yl.pdf
    • https://static.s123-cdn-static.com/uploads/4459787/normal_5ff08ecbb3c6c.pdf
    • https://static.s123-cdn-static.com/uploads/4445735/normal_5ff6bfd666a27.pdf
    • https://cdn-cms.f-static.net/uploads/4453908/normal_60274afb0b33f.pdf
    • https://static.s123-cdn-static.com/uploads/4368474/normal_5fe2cfc328a9b.pdf
    • https://static.s123-cdn-static.com/uploads/4408319/normal_5ffa52b34d53c.pdf
    • http://natural-shop.info/calefon_universal_cu_126_manualncn0d.pdf
    • https://cdn-cms.f-static.net/uploads/4457561/normal_604cfd0f76161.pdf
    • http://xofajenakimexo.iblogger.org/fts_answer_key_qari_31_august_2019.pdf
    • https://cdn-cms.f-static.net/uploads/4449614/normal_5fd2e3bcd22f4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://donosusiligid.rf.gd/sezaxuxewadifozuvukipuvo.pdf
    • http://pijularof.epizy.com/valkyria_chronicles_3_guide.pdf
    • http://xebowuruno.epizy.com/thimbleweed_park_mod_apk.pdf
    • 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_off0000f25b.bin
2c3a1fba99f70ff109e2941d7149dced02531c591840599389873d3c0e585504		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF25B 5248 bytes
font_01_sfnt_off00010445.bin
e485907dd49d6962f769cbdcd0392f6d07e582d79dfb7cf3462c3068e4045d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10445 11036 bytes

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