Malicious PDF — malware analysis report

Static analysis result for SHA-256 32fe13b356e2a6d2…

MALICIOUS

PDF

76.0 KB Created: 2021-03-27 14:21:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cee77118e971f9e1f07a62368ca92895 SHA-1: 79c0aa3cd0fc4ee2a214467234bfc574a47a8ce4 SHA-256: 32fe13b356e2a6d2d91fba30f4914a68938080d8678ed9f7ccc107cdf634bf98
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'construction safety manual'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=what+is+construction+safety+manual
    • https://cdn.sqhk.co/gesaxamadew/ibRjdSr/gizimalamutom.pdf
    • https://cdn.sqhk.co/falugojafat/EggSzbP/47175972134.pdf
    • https://cdn-cms.f-static.net/uploads/4489429/normal_602a56d95ae8c.pdf
    • https://cdn-cms.f-static.net/uploads/4452206/normal_5fe86bed715b9.pdf
    • https://cdn.sqhk.co/tegatiwuwax/3ojciaw/nova_scotia_experience_express_entry_application_guide.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/baritexovopa/68812425449.pdf
    • https://s3.amazonaws.com/wizidimawag/lukivedi.pdf
    • https://s3.amazonaws.com/setikizo/81243264163.pdf
    • https://s3.amazonaws.com/vavale/90610671072.pdf
    • https://s3.amazonaws.com/rilexazejuzovep/taxowofuwigubelez.pdf
    • https://s3.amazonaws.com/fefurorobumi/26946691727.pdf
    • https://s3.amazonaws.com/babetafaperaxov/formas_de_cocinar_chorizo_al_horno.pdf
    • https://s3.amazonaws.com/xedewofuretujo/gixalerijirakefamaj.pdf
    • https://s3.amazonaws.com/tiluwisulepam/history_of_western_music_timeline.pdf
    • https://s3.amazonaws.com/rogugagatuf/18559305590.pdf
    • https://s3.amazonaws.com/dufekifaral/55670375336.pdf
    • https://s3.amazonaws.com/gisujubolidine/sport_mediaset_probabili_formazioni_mondiali.pdf
    • https://s3.amazonaws.com/wizidimawag/lcpc_exam_study_guide.pdf
    • https://s3.amazonaws.com/gozifep/apple_inc_annual_report_2016.pdf
    • https://s3.amazonaws.com/farowug/synonyms_and_antonyms_worksheet_grade_1.pdf
    • https://s3.amazonaws.com/vibuvomomuv/colon_polyp_surveillance_guidelines_2017.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_off0000e929.bin
d5c5042e4fd224157d33f6ac00c114db16d5faf6be437f95569dd04540f5cf42
pdf-font-stream PDF embedded font (sfnt) at offset 0xE929 5236 bytes
font_01_sfnt_off0000fae0.bin
8e73fee1fde9ac91cdd1f82cb6831e50af63c2029507064f9060eb87aa0e7b68
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE0 12084 bytes