Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd0b5451a3cff8e…

MALICIOUS

PDF

84.9 KB Created: 2021-05-10 02:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45f82033def94c08ebb416fb43ea3ac8 SHA-1: c62a9bb790e00bdb7eb05f2090cba1c6358fb195 SHA-256: fbd0b5451a3cff8e7ba496a1657e8c10190e7ab9e3cbb8a5a5cf2564fb12d8c1
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to pairing JVC earbuds, directing the user to a malicious URL. ClamAV and ML classifiers strongly indicate this PDF is malicious, specifically identified as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/strik?utm_term=how+to+pair+jvc+earbuds
    • http://povar2020.site/340801030252bs3d.pdf
    • http://ottics.ru/definition_of_rainforest_biomeqpkig.pdf
    • https://jivenikovo.weebly.com/uploads/1/3/4/3/134308789/bejedip.pdf
    • http://avto-document.site/wakamonez2jpl.pdf
    • https://zoxiniguve.weebly.com/uploads/1/3/4/5/134584112/jibibumenejox-fivetufabisi.pdf
    • http://chemistryplus.space/luzasumonetobasomokuromul8gmg3.pdf
    • https://pogivigewe.weebly.com/uploads/1/3/1/4/131438874/2751379.pdf
    • http://vadozawemowo.iblogger.org/cartesian_cylindrical_spherical_coordinates.pdf
    • http://matcobzor.ru/85264704787jp3bw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/bofake/rl_craft_modpack_guide.pdf
    • https://uploads.strikinglycdn.com/files/106be06f-4fc8-4fd6-980d-49299d2c52c7/binoviromazu.pdf
    • https://uploads.strikinglycdn.com/files/5bdb6946-65c7-4e17-9dbd-206d5e253194/mojejefit.pdf
    • https://b6086c54-8ef4-40f3-ba18-bbbb993b339e.filesusr.com/ugd/36e927_35c2f2a335f04136b3e99cad4653fd45.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2993925a-7ae5-4a9c-a53d-f54114895901/is_easy_peasy_lemon_squeezy.pdf
    • https://s3.amazonaws.com/megodipewukitoj/little_alchemy_2_cheat_sheet_unblocked.pdf
    • https://s3.amazonaws.com/jezekemunidup/89452537260.pdf
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_095e5f8918094757befdd733faafc78f.pdf?index=true
    • http://bosomonuzopedu.rf.gd/buckling_restrained_braced_frames.pdf
    • https://s3.amazonaws.com/dotivaf/what_is_the_difference_between_voiced_and_unvoiced_th.pdf
    • https://af1bea64-f5cd-41c2-a7c1-97f21c1aa057.filesusr.com/ugd/592671_dc39792c781640dfba691b70963eef38.pdf?index=true
    • https://932aa67c-856a-4fda-9fc8-fe3f50d4acc2.filesusr.com/ugd/a25eee_e518802a19b149f6be6bdbf083505d34.pdf?index=true
    • https://uploads.strikinglycdn.com/files/071377b8-fe4c-4604-b1ae-d3eefc750ad1/zezevigekidogekixeza.pdf
    • http://tuludipetowizad.rf.gd/gamuxoxonejezaramis.pdf
    • https://s3.amazonaws.com/fadupazageraf/36394572723.pdf
    • https://uploads.strikinglycdn.com/files/d49c6da6-5754-4a61-a176-65cd0558eb20/48363880627.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4a6.bin
23460f2a9cb1ed8f1cc56ea1a3e461a6870a380e7dcacbe8ba0157deb356db93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A6 2992 bytes
font_01_sfnt_off0000ff4a.bin
a9fc9f10f08ae61ea97cdbec08dc6cd393a21cc648f9fbbf9e70cb7510266902		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4A 5140 bytes
font_02_sfnt_off000110e4.bin
833033cd07451035f7d5a81588df0064302b58c89e27ca7e4944a00b7b13e693		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110E4 11336 bytes
font_03_sfnt_off0001378b.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1378B 4324 bytes

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