Malicious PDF — malware analysis report

Static analysis result for SHA-256 d86f4fd71e659e4f…

MALICIOUS

PDF

70.0 KB Created: 2021-01-29 18:29:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8353dd0c664d42afa21228386e091ed2 SHA-1: 22bea84cd08dcfc6a88f6446fc10ed75823409d2 SHA-256: d86f4fd71e659e4f7a2b75416a9d7a8282dc0300291abeb133d5545d62ef8654
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that mentions 'facturacion equipaje extra aeromexico', suggesting a phishing attempt related to airline baggage fees. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://trafffi.ru/wb?keyword=facturacion%20equipaje%20extra%20aeromexico PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366665/normal_6001a7e39d8ee.pdfIn PDF document text
    • http://biomaniks.website/mining_inc_codesfcbx7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420612/normal_5fd797022bc1e.pdfIn PDF document text
    • https://cdn.sqhk.co/kapimetavis/XnRgfRw/23869595783.pdfIn PDF document text
    • http://jewlgems.com/archer_hotel_florham_park_florham_park_nj_07932ot5rm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417406/normal_5fdd6f453bf0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413983/normal_5fdd0cd82c6e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464874/normal_5fdea2535181e.pdfIn PDF document text
    • http://top-shop-store.website/xadofobivanzcqk.pdfIn PDF document text
    • http://a1metromovers.com/863288617775zrh.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/iRj1pjd/marketplace_grille_gig_harbor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fopalew/flight_pilot_apk_indir_android_oyun_club.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/diabetes_guidelines_2019_diagnosis.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/rowumutuponopejoma.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/97890217269.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD203 5096 bytes
SHA-256: 5ce6f0194a29cd998fae60aa7442e9782a2cef6fe136c3b3cb4c70f8fa672046
font_01_sfnt_off0000e356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE356 11748 bytes
SHA-256: 8d8f342da9ccab71a02127e70b9954580d3466d6bf8c8b2e8d8422d07d21072f