Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe6a040530939482…

MALICIOUS

PDF

75.6 KB Created: 2021-04-24 17:46:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a81e144915046244055cde4310f314dd SHA-1: e30430035609cf58679a862e2aa8534a725323bd SHA-256: fe6a0405309394821b6e1ebc8710bd1332a380c23ca913cebd6e702d87790bae
124 Risk Score

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 0.8995

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://nipisod.ru/strik?utm_term=the+warrior+diet+food+list PDF link annotation
    • http://vazitafolozif.22web.org/63786126739.pdfIn PDF document text
    • http://dexiserabasavo.mygamesonline.org/carslaw_jaeger_conduction_of_heat_in_solids.pdfIn PDF document text
    • http://circus.market/wotegesatil1601.pdfIn PDF document text
    • http://rukafijawidataw.iblogger.org/388265881.pdfIn PDF document text
    • http://kugaraginoja.mypressonline.com/binary_isomorphous_alloy_system.pdfIn PDF document text
    • http://tukiviretek.iblogger.org/soleus_12000_btu_window_air_conditioner_review.pdfIn PDF document text
    • http://reduslim-official.website/trinetram_video_songs_hdiheam.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/the_guitar_works_of_agustin_barrios_mangore.pdfIn PDF document text
    • http://nickned.me/how_to_set_frequency_on_baofeng_uv_82kxp7a.pdfIn PDF document text
    • http://livemavuxedu.getenjoyment.net/24911474751.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://povusesa.rf.gd/bugenarez.pdfIn PDF document text
    • http://fagewawejaso.rf.gd/portable_basketball_hoop_installation_near_me.pdfIn PDF document text
    • http://litorow.myartsonline.com/wirawukom.pdfIn PDF document text
    • http://zaxigadanu.rf.gd/cours_sur_les_automates_programmables_industriels.pdfIn PDF document text
    • http://lodiluz.rf.gd/electricity_bill_uk.pdfIn PDF document text
    • http://fivinilon.rf.gd/ufc_strawweight_fights.pdfIn PDF document text
    • http://fazaburifug.myartsonline.com/statistical_mechanics_download.pdfIn PDF document text
    • http://vubukenod.rf.gd/wosomatimawiberilugunix.pdfIn PDF document text
    • http://rugafisa.epizy.com/ethyl_chloroformate_solubility.pdfIn PDF document text
    • http://linexiziretewoj.rf.gd/dot_biennial_report.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EBC 5036 bytes
SHA-256: 5e911be4f0ea54c9633d11e67ae397700bf7af71b7aa3b0a42bcb30bc283028c