Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fd1c051aa40fb1e…

MALICIOUS

PDF

195.6 KB Created: 2021-04-17 12:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 03b4f2511996daa0f6bb564a7bbfb138 SHA-1: ce606fedc2c71ee5bd3d34527062ca60a3065d48 SHA-256: 8fd1c051aa40fb1e4ef0bd67ea712eea8c4375782af3d72e3533b77cf74ae10c
184 Risk Score

Malware Insights

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

The PDF contains a lure for a payment redirection, suggesting a business email compromise attack. It also includes an external URI pointing to a suspicious domain, likely for downloading a secondary payload. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/strik?utm_term=descargar+biblia+reina+valera+1960+gratis+en+espa%25C3%25B1ol+con+audio PDF link annotation
    • https://wefizaxire.weebly.com/uploads/1/3/0/9/130969527/govujexezifuwodeget.pdfIn PDF document text
    • https://zanobuxukopul.weebly.com/uploads/1/3/4/6/134678616/837973178b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388174/normal_602f98ce9a51d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501214/normal_5fe5e38503631.pdfIn PDF document text
    • https://jupolojujilozas.weebly.com/uploads/1/3/4/5/134598947/tefixoruvox.pdfIn PDF document text
    • https://bonitolopulako.weebly.com/uploads/1/3/1/3/131384654/jozalizetoxi.pdfIn PDF document text
    • https://pedigibija.weebly.com/uploads/1/3/1/8/131857049/sokanese.pdfIn PDF document text
    • https://tozupefiga.weebly.com/uploads/1/3/4/2/134265365/1220982.pdfIn PDF document text
    • https://fotaluxig.weebly.com/uploads/1/3/5/9/135973299/xenuzepixufupesezaj.pdfIn PDF document text
    • https://zekisotirateme.weebly.com/uploads/1/3/4/3/134368555/talupaxozejagokupit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497079/normal_5fcf51a421c13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408582/normal_5ff893ff75b7a.pdfIn PDF document text
    • http://gesofetol.iblogger.org/reduccion_de_costos_definicion.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fc7362c-b497-4e02-8803-130a0f0461c4/soundlogic_xt_shower_speaker_pairing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89a08aac-dade-4074-abb3-52e4275cd951/14743748258.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f242caa-2335-42ab-b3c8-1aa65043766b/10991611100.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3764b437-41ad-461f-89f4-866d2812c15e/36442221418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2323fcb-5621-4433-8a3e-fda275e5b46c/how_to_write_smart_goals_and_objectives_for_work.pdfIn PDF document text
    • http://fujirezidixivu.rf.gd/pidodebaromitegonu.pdfIn PDF document text
    • http://numapev.rf.gd/41129846418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d203d8a7-8a47-4b0f-ad4b-5da1f1780a90/frankenstein_1818_text_vs_1831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6424a368-a77c-4787-944d-4cfb2a8e297d/armada_ernest_cline_film.pdfIn PDF document text
    • http://kixugafo.epizy.com/fisiologia_do_pancreas_exocrino.pdfIn PDF document text
    • http://volarudene.epizy.com/what_is_tcp_ip_network_printer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d7d870e-943a-4c73-94de-e9dc45f1a2db/what_is_veronica_roths_writing_style.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00027ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27CA2 12960 bytes
SHA-256: 54fd8052db04afb78b9bbdb239d55e9a5ab63637ae8ee5ebe41d70b3ecbe242d
font_01_sfnt_off0002a6a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6A7 6156 bytes
SHA-256: 3584edc873a438abbb15358c8c654835e0d999d7cb4edd42eef0431c411cd62d
font_02_sfnt_off0002bb70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB70 13208 bytes
SHA-256: 99f2da36d19cc4182a31393afae371d80cbe827f8d623c4454c8a0fc3e8248af
font_03_sfnt_off0002e679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E679 16172 bytes
SHA-256: 236129c6cae4dd671f39b1ea51d0e00b811d7572221a88ed80e4de40daaea4fe

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