Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82455f99233e26f…

MALICIOUS

PDF

76.3 KB Created: 2021-02-20 08:57:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: cd95f2fa7475668ce73cb2f8f2a9cfba SHA-1: 17d2fb13d45ca4b87ffe13fa3e9e43d76a32ab88 SHA-256: c82455f99233e26ffb79260bece844b3740001902c898c5edce6e44c1715add5
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary external URI pointing to 'https://baarspo.ru/strik?utm_term=what+is+the+salary+of+chef+in+indian+navy', suggesting a lure to a malicious site. The PDF's structure and embedded content are indicative of a phishing attempt designed to trick users into clicking on malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=what+is+the+salary+of+chef+in+indian+navy PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416139/normal_5fdfc94e8f003.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451044/normal_5fefc56b712a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385197/normal_602a0a341fca7.pdfIn PDF document text
    • https://cdn.sqhk.co/bozawenibiwa/geicji2/90457972882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495685/normal_5fdad413a4f71.pdfIn PDF document text
    • https://cdn.sqhk.co/toruwapelot/hiy0if8/tekajolugepime.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484815/normal_5fc5edc0e645d.pdfIn PDF document text
    • http://mangalvpodarok.ru/apple_music_vs_spotify_family_plan_ukqkbdp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416510/normal_5ff2900b653e5.pdfIn PDF document text
    • https://cdn.sqhk.co/riwutosax/cmsjghf/delete_game_center_account_data.pdfIn PDF document text
    • http://geesecam.com/204186776379prdz.pdfIn PDF document text
    • http://pexulabin.iblogger.org/professional_powerpoint_templates_free_2017.pdfIn PDF document text
    • http://barcaporirternet-interbank-pe.com/alcast_eso_leveling_guideh4rh7.pdfIn PDF document text
    • http://fifamarketbot.com/jepesuzuro7beam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375075/normal_5ff426a97d460.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476947/normal_602f5306ab3c9.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/Uexhjhc/64494631468.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vedumojaje.epizy.com/bowabavisibepulo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DE 5072 bytes
SHA-256: 8079beb18c9aa6e27859bba514a55b18dcb2976eee347fe43d3fece5666b22cb
font_01_sfnt_off0000f223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF223 10500 bytes
SHA-256: ff819d1e21f4b9e3136d4779d006d7563e9b7089050c782299aa5a74cc6ff463
font_02_sfnt_off000115e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E4 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

Open this report in the interactive analyzer, or submit your own file for analysis.