Malicious PDF — malware analysis report

Static analysis result for SHA-256 346baecf1e0eabea…

MALICIOUS

PDF

78.9 KB Created: 2021-03-18 00:54:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56ab6f3deb3f32447d5511205ec6ff71 SHA-1: 24643aa243117d3d676661094ac10c205c7fefdf SHA-256: 346baecf1e0eabeaddfc50f919c70b11019024da14901d0f89f53e66cc40b6e4
136 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'average income to live in california' and includes a high-risk heuristic firing for an advance-fee scam. It also contains an embedded URI pointing to 'vilenefex.ru', which is likely the malicious destination. The ML classifier strongly indicates maliciousness, and ClamAV also detected it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://vilenefex.ru/strik?utm_term=what+is+the+average+income+to+live+in+california
    • https://static.s123-cdn-static.com/uploads/4454984/normal_5fedcb89d0bfd.pdf
    • https://static.s123-cdn-static.com/uploads/4463300/normal_5fc9899044459.pdf
    • http://kivolugog.mypressonline.com/sejarah_behaviorisme.pdf
    • https://cdn-cms.f-static.net/uploads/4492246/normal_603eafc98aea3.pdf
    • https://cdn-cms.f-static.net/uploads/4446147/normal_6030e9f2a2089.pdf
    • http://bimovixexena.scienceontheweb.net/72531450142.pdf
    • http://pogekoxuw.mygamesonline.org/iassc_lean_six_sigma_black_belt_body_of_knowledge.pdf
    • https://static.s123-cdn-static.com/uploads/4480889/normal_5ff4a7d8a4447.pdf
    • http://momarivido.mypressonline.com/midil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dasobiviwadodaj.atwebpages.com/meade_autostar_495_497_difference.pdf
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_6647a812a2a646d9a533995606f0ed86.pdf?index=true
    • https://s3.amazonaws.com/loxopudizus/judununanaluputusit.pdf
    • https://uploads.strikinglycdn.com/files/3de2036a-1da6-48dd-b796-718e2dd14471/wudezaxevixaroxakaj.pdf
    • https://s3.amazonaws.com/tanapilamaxi/lusabidovibipodagudaxure.pdf
    • https://eee5dff6-7331-416e-acdf-593d0c386862.filesusr.com/ugd/21e9e0_83807d9cdd134785bef655b908c4a103.pdf?index=true
    • https://s3.amazonaws.com/fivebo/the_magic_rhonda_byrne_review.pdf
    • https://a001dc82-f31e-4944-9b76-0a8e602b6855.filesusr.com/ugd/e4ee87_cfbcdd0915ce4e368491871396fcee99.pdf?index=true
    • https://uploads.strikinglycdn.com/files/05da1856-e26d-4e70-bc1a-e3087aaca386/41683681237.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_off0000f5ae.bin
db9a3907067f4a61285ac4abe227af2b5f18972dea2fb01ed6dc570342e846f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AE 5368 bytes
font_01_sfnt_off000107dc.bin
a5d5fa67470b6cc29f80d5a0e4110c9b3420b2794760511ce0c156bb08004cf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107DC 11152 bytes

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