Malicious PDF — malware analysis report

Static analysis result for SHA-256 346996901c8ff7ec…

MALICIOUS

PDF

70.7 KB Created: 2021-04-05 17:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e1e0f36f212854c1a545a3867d449473 SHA-1: 73c6925076d2abb8af9d325a129efb93c30e4f63 SHA-256: 346996901c8ff7ecbffa3da2309603d6efe651b219ac006f131f3bc1dcf5bafa
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9019

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
  • 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
  • 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://vilenefex.ru/award?keyword=pdf+buku+akuntansi+keuangan+kelas+11 PDF link annotation
    • http://housefashion.ru/91541396832hc4nh.pdfIn PDF document text
    • http://tedalaz.66ghz.com/mirror_site_to_cygwin.pdfIn PDF document text
    • http://jitutirujemi.22web.org/xeneletuwora.pdfIn PDF document text
    • http://creditpm.com/ferokegelerebijesipzg5x7.pdfIn PDF document text
    • http://dafusunefu.iblogger.org/melting_point_and_boiling_point_of_metals.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/59033976-b9e8-432f-8556-e891ba21fbbf/kifibevepenemuboxotelil.pdfIn PDF document text
    • http://xazomagojuwa.epizy.com/jumolibilijugu.pdfIn PDF document text
    • http://bojefej.epizy.com/69860399279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a6c6522-0ebc-415d-b652-8ea48ffee56c/setobimexedonapalosu.pdfIn PDF document text
    • http://vilobeve.rf.gd/achilles_tendinopathy_exercises.pdfIn PDF document text
    • http://zatafefot.rf.gd/xedofipudusezu.pdfIn PDF document text
    • http://moganip.epizy.com/how_to_post_a_general_journal_entry_in_quickbooks_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ae285d4-69bc-479a-b345-65e1f14d0a84/tixixifitizusoguxidolex.pdfIn PDF document text
    • http://zerujafulo.rf.gd/5271712526.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/150a5d9a-a5a6-4d54-8016-7f88addafa6d/problemas_de_porcentajes_1o_eso_resueltos.pdfIn PDF document text
    • http://letajijagobuma.rf.gd/ashrae_90._1_si.pdfIn PDF document text
    • http://lowubav.rf.gd/exercicios_alcoois.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce259efe-51d0-4d6a-ae41-0b3ce8e0ede1/sony_dsc_f828_video_quality.pdfIn 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_off0000ee26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE26 5008 bytes
SHA-256: 0c62b0ce6fed88d4b4e45d43c44cd0eded713142fc11452d5f6cd2b1cb6ed4df
font_01_sfnt_off0000ff45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF45 9660 bytes
SHA-256: 3454fab8fd66d389160ff96b0cf0c3ee342bdd0991da93c53f5e6fdf8f743eea

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