Malicious PDF — malware analysis report

Static analysis result for SHA-256 a587710ecc809f2c…

MALICIOUS

PDF

79.7 KB Created: 2021-02-16 13:16:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 120a058cf467621e76e3c093da63ec94 SHA-1: 9bfcf71a9b2f8dc12749f351536e7d1e7b71fc9b SHA-256: a587710ecc809f2c4ffe7c13eb260ee3994a09aa6ab7a0718f599caf893138d7
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=el+profeta+khalil+gibran+sobre+el+matrimonio In PDF document text
    • http://tawojuxonivix.22web.org/chocolate_film_malayalam_songs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/ehahhhc/jaxujutumuvop.pdfIn PDF document text
    • http://xugememutan.iblogger.org/best_fitness_programs_for_seniors.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456705/normal_5fc867f8d013e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384655/normal_5ff76ece7c0dc.pdfIn PDF document text
    • http://sifejon.22web.org/businessman_tamil_songs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/fighcjb/swansea_gower_bike_ride_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418764/normal_5fd8b3854e691.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391308/normal_5fe7cb0cae359.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484635/normal_602200b41ae59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385848/normal_5ff43101f1ddd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tonabezagarizom.epizy.com/zobepelubaxonag.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/tozetoxenowaxulopumuli.pdfIn PDF document text
    • http://ripofosefalub.rf.gd/annual_report_design.pdfIn PDF document text
    • http://jepogedepujadul.rf.gd/cuplock_scaffolding_manual.pdfIn PDF document text
    • http://peburameg.epizy.com/zojupikudu.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/mopobuduxonolefesupi.pdfIn PDF document text
    • http://rotitow.rf.gd/90783601.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_off0000f7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AE 5476 bytes
SHA-256: affb0cd557e041dff3a5c972bff5c893603335ec9afc21c19cb118fdffac08e0
font_01_sfnt_off00010a26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A26 11584 bytes
SHA-256: 4c46b2d96f4da006a6a0f071eeacd80a3e75bb25da60d398cfc61b6253eb573c

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