Malicious PDF — malware analysis report

Static analysis result for SHA-256 328efa2fca96d3bd…

MALICIOUS

PDF

71.1 KB Created: 2021-02-13 15:50:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3e45891c78effc9ce320712534a9c8e6 SHA-1: c1e2b8f40f1500de892e246bdc68f14f8ef9fa39 SHA-256: 328efa2fca96d3bdcf8506d807b5333d788cc0170164b0f1fb1cb1a4a5e34b90
126 Risk Score

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://maypoin.ru/aws?utm_term=dvdvideosoft+3gp+video+converter+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461219/normal_5fe9229504e92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457561/normal_5fe33abb1f0cf.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/jhdXvjb/bubble_witch_saga_2_apk_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/ojjjgld/33400602443.pdfIn PDF document text
    • https://cdn.sqhk.co/vugiboba/haVdyT2/tudatiwosemuba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470014/normal_5ff1970a11d77.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://varaxekewuveza.epizy.com/fantasy_football_cheat_sheet_2018_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/regira.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/ayyappa_swamy_picture.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/meningoencephalitis_pada_anak.pdfIn PDF document text
    • http://zulorokufejepa.rf.gd/atheros_ar9285_wireless_network_adapter.pdfIn PDF document text
    • https://s3.amazonaws.com/suzujewa/47306341210.pdfIn PDF document text
    • http://tixinova.rf.gd/56664454934.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/aborsi_menurut_islam.pdfIn PDF document text
    • http://zimunumiwu.epizy.com/49541326385.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_off0000d980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD980 5304 bytes
SHA-256: 75b69000c9b3ad702437701da773217029cb2c093e0233ce948991e16e646483
font_01_sfnt_off0000ebb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB2 10464 bytes
SHA-256: c10ad9d1c91e12c15625350a967de90e10806abac3d8680cc140be2e4089d44a