Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef85430e320c762…

MALICIOUS

PDF

158.1 KB Created: 2020-12-08 07:19:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7550a46ce8bda1a8792775b476191b1e SHA-1: d266beee99053f2b7aac4e66b7dc2c6e6a018800 SHA-256: bef85430e320c762126fae5d450c885411163a4afe8aeb89fc83fd0956879e22
136 Risk Score

Malware Insights

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

The sample was flagged by a machine learning classifier and ClamAV as malicious. Heuristics indicate it uses an advance-fee scam lure, specifically mentioning scholarships and courier delivery requirements. The embedded URL points to a suspicious domain, likely serving as a redirect to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafffe.ru/strik?utm_term=florida+scholarships+class+of+2020
    • https://wuwotozon.weebly.com/uploads/1/3/4/3/134315251/zarokuriwuvu.pdf
    • https://kedetasogo.weebly.com/uploads/1/3/4/5/134599644/9977225.pdf
    • https://vexefanakaxaki.weebly.com/uploads/1/3/4/8/134871487/7066267.pdf
    • https://cdn-cms.f-static.net/uploads/4460723/normal_5fa7a37cf03a9.pdf
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f876d7fab8eb.pdf
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5fc320b70d303.pdf
    • https://nonefipuxope.weebly.com/uploads/1/3/4/4/134493331/0668dc9e2aa2c18.pdf
    • https://static.s123-cdn-static.com/uploads/4486213/normal_5fc3d768091da.pdf
    • https://kozenuxifojani.weebly.com/uploads/1/3/4/6/134665776/9399955.pdf
    • https://cdn-cms.f-static.net/uploads/4377717/normal_5f89d0e056264.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bulolimepol/gexamusisifegip.pdf
    • https://s3.amazonaws.com/tadovu/78599625509.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf23c8cb11b25c09ae6ce/1606218300493/boron_nitride_molecular_orbital_diagram.pdf
    • https://static1.squarespace.com/static/5fc64d6ab8467722f1f88a1e/t/5fc84f06094cf7617dbca4d6/1606962950692/maternal_instincts_movie_2019.pdf
    • https://s3.amazonaws.com/xijuxosisomuna/facebook_app_for_pc_free_softonic.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021943.bin
49c42163dfde4fafd4062bcfba8a210489b0717b72c0973fdbcdf39e7e2e8c1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21943 5472 bytes
font_01_sfnt_off00022bd9.bin
ec90cf22441c2553dc9d3d995162868eff7faab82781c4839bf8214e15b94109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22BD9 12300 bytes
font_02_sfnt_off00025553.bin
0865ea5686e30d19842a941efae749c2e92da649021023aa876fc32c67f43dd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25553 16232 bytes

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