Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f46eddcde834e07…

MALICIOUS

PDF

80.3 KB Created: 2021-06-12 18:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bbffe107bafb7c73814e97de3860d7fe SHA-1: 66779713bb45f7c900b229ced336aa242e7a6e7f SHA-256: 2f46eddcde834e074f805c7ef2ef1250ddbf8628d48bb1d009974fa7590a719d
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9469

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://pistant.ru/pbw?utm_term=bts+blood+sweat+tears+mp3+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450260/normal_6014ac0614357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471085/normal_6041c1d13d5fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379839/normal_5ffaa1beeba58.pdfIn PDF document text
    • https://dexigator.weebly.com/uploads/1/3/6/0/136049715/wijujegasizudit_kosasoxijedo_vemozuba.pdfIn PDF document text
    • https://tatazopizen.weebly.com/uploads/1/3/1/1/131163492/e2df2.pdfIn PDF document text
    • https://ketevifut.weebly.com/uploads/1/3/1/4/131453005/balavenobepal-zufigetoxovi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385635/normal_5fefa958cea47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370090/normal_6068d037998db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393624/normal_60bfdd0fb68e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377100/normal_5ffc991e2864c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387054/normal_5fe24db1b4ad9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://negovijalulu.pbworks.com/w/file/fetch/144418464/cest_si_bon_bakery_locations.pdfIn PDF document text
    • http://garifukedako.pbworks.com/f/ntn_flange_bearing_catalogue.pdfIn PDF document text
    • http://xumefosux.pbworks.com/f/95008200877.pdfIn PDF document text
    • http://joxupakager.pbworks.com/w/file/fetch/144490071/15261339401.pdfIn PDF document text
    • http://bojifimaral.pbworks.com/f/how_to_install_gta_5_mod_menu_xbox_one_usb.pdfIn PDF document text
    • http://busututesemo.pbworks.com/w/file/fetch/144829860/binovutezevifavapiji.pdfIn PDF document text
    • http://muzurinugaw.pbworks.com/f/33251771931.pdfIn PDF document text
    • http://nusuwoxub.pbworks.com/f/how_much_does_it_cost_to_open_a_kung_fu_tea_franchise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfe0a81b-e7db-463c-858b-38e6c26b8d99/when_we_were_kings_streaming_australia.pdfIn PDF document text
    • http://zajozote.pbworks.com/f/loxarizugudizafavabevatem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41512cf3-4381-4419-9efc-38dafa3f9e13/how_to_draw_a_normal_distribution_in_tableau.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF030 7772 bytes
SHA-256: 04a88adf8b8b046018506daa026dcd7b71e4497df00aaf50e824e38175e26154
font_01_sfnt_off00010a43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A43 5288 bytes
SHA-256: c9c5052a797935ef5869dce94212e623f5afdde3e02637f2766955caefffac9d
font_02_sfnt_off00011c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C26 11820 bytes
SHA-256: cde8fc05f021c256d491bc95433c6d148db385f7cd6e97e0f2528397ae0063c3

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