Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1fddcdb627b5e2…

MALICIOUS

PDF

75.6 KB Created: 2021-03-23 18:40:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: b6b333ffd8e5d78e8c39e9dc3645e645 SHA-1: 07650b0c6cac862ba6d38fcb7db6bd9837d3ff62 SHA-256: ec1fddcdb627b5e2f1427bef7a2470f0666bef5318487b1ea605975991e2f4bd
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary suspicious URL being 'https://resalured.ru/strik?utm_term=el+nombre+de+la+rosa+full+movie'. The document body, though partially corrupted, suggests a lure related to 'El nombre de la rosa full movie', aiming to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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
  • 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://resalured.ru/strik?utm_term=el+nombre+de+la+rosa+full+movie PDF link annotation
    • http://pozonewexoz.iblogger.org/39222561912.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404975/normal_604d2efa6d9d9.pdfIn PDF document text
    • http://sozefavi.22web.org/92066612027.pdfIn PDF document text
    • http://businessmentality.com/mizikefinefor0fj13.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/egd4ggq/51308235187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451363/normal_600d25ab95e14.pdfIn PDF document text
    • http://xubaseki.iblogger.org/fidujarajanul.pdfIn PDF document text
    • http://firstdoctor.xyz/31409830946oqa6p.pdfIn PDF document text
    • http://kayikciakademi.com/56941454611yn29z.pdfIn PDF document text
    • http://elinekici.online/danone_integrated_annual_report_2017raavz.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/hhtHiio/flip_phone_at_t_prepaid.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/chijeGr/pimodebijutezoferobe.pdfIn PDF document text
    • http://goldenframecollision.com/what_is_bts_personalityg6ggl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499299/normal_6027290b01adf.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/014cbc40-763c-4658-842d-c992685b6c7b/john_deere_l110_automatic_deck_belt_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d9c0a95-4383-4692-a483-137c4108d9a4/8.1_perpendicular_bisectors_of_triangles_worksheet_answers.pdfIn PDF document text
    • http://kebafitesulodu.epizy.com/93020321606.pdfIn PDF document text
    • http://wereguvepowu.epizy.com/pabekijeviz.pdfIn PDF document text
    • http://jutebef.rf.gd/cash_bill_receipt_template.pdfIn PDF document text
    • http://jagixav.rf.gd/26780941691.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_off0000e692.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE692 5208 bytes
SHA-256: a840e49148644bfc9464533f777f45b5930a290f8a170455fe1e41c87488c83a
font_01_sfnt_off0000f831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF831 12180 bytes
SHA-256: 628353ae50b9bd80b6a8bf7e81a25fcacc05129e5ebce1bcdaac11ed4e56a7cb

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