Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd595885d74fc450…

MALICIOUS

PDF

74.5 KB Created: 2021-03-27 10:33:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cacacc95c13f13025b9afb5d909af9ca SHA-1: af6c2d275bccc17213b528a5f10a28d297d0dc35 SHA-256: fd595885d74fc450e5c51eefef51b4122bda9f999862ef66d3bf79c38c8355b6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into downloading malware disguised as a printer driver. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://dafemum.ru/strik?utm_term=brother+tn-630+driver+mac
    • http://gexomafe.mypressonline.com/4457863881.pdf
    • http://tinubawolu.mywebcommunity.org/wemolexexanatovili.pdf
    • http://revilokepudidu.mygamesonline.org/fundamentals_of_molecular_spectroscopy_banwell.pdf
    • http://xiwupulo.medianewsonline.com/ong_orality_and_literacy_summary.pdf
    • http://kutatit.getenjoyment.net/expert_card_technique.pdf
    • http://xenalebosob.scienceontheweb.net/67587802328.pdf
    • http://jadogaxarabu.mygamesonline.org/fenimowol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/dozuga/chuyn_t_file_nh_sang_online.pdf
    • https://s3.amazonaws.com/lovomijelun/dslrbooth_pro_full_version.pdf
    • http://fabedidatifi.onlinewebshop.net/most_energy_efficient_electric_fireplace_insert.pdf
    • https://s3.amazonaws.com/nuselufuzo/41279478670.pdf
    • https://s3.amazonaws.com/lejivugeleguwod/pefitinazofuwixo.pdf
    • https://s3.amazonaws.com/seriposuj/6253190523.pdf
    • https://s3.amazonaws.com/tibanepoxilibud/62320724582.pdf
    • https://s3.amazonaws.com/xanunafojuloki/unicameral_and_bicameral_legislature.pdf
    • http://vasidafiro.epizy.com/laminar_flow_equation.pdf
    • https://s3.amazonaws.com/dowadotiju/is_californias_economy_better_than_texas.pdf
    • https://s3.amazonaws.com/rupatojuko/dred_scott_court_case_apush.pdf
    • https://s3.amazonaws.com/jepinebawo/kgb_archiver_for_windows_8._1.pdf
    • http://sozufig.rf.gd/vugofogezisowavelunatus.pdf
    • https://s3.amazonaws.com/vavabi/shadow_template_d_d_3._5.pdf
    • https://s3.amazonaws.com/vaxebisapesi/astellia_online_deutsch.pdf
    • https://s3.amazonaws.com/sorogamat/69436319271.pdf
    • https://s3.amazonaws.com/jewizopukuni/parrot_mki9200_car_battery.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4ee.bin
a75bc2016a34a859eb1954f7bf592dfea6efd4d5f43a0940bba3200876cd9609
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EE 5568 bytes
font_01_sfnt_off0000f7c4.bin
3716f90178fbf28410a2f9d59c828bdb6ad273299023d7a4ae27d80b5b4464a5
pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C4 10856 bytes