Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2223c7a3a490c9e…

MALICIOUS

PDF

72.4 KB Created: 2021-03-03 11:40:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c23719fd6de28a36340e35ca6618e1b6 SHA-1: 01b342312128b1863674d87e99b02499c675f7f5 SHA-256: b2223c7a3a490c9edbed5ed191ea4bc7d6f61d64952a2c85721558fe08af0ecb
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/award?keyword=electric+smoker+cooking+times+chicken+breast PDF link annotation
    • http://perevod24-card2card.site/equinox_brooklyn_heights_schedule60ciz.pdfIn PDF document text
    • https://cdn.sqhk.co/moranunemuk/hjgggQO/lego_marvel_superheroes_cheats_xbox_1.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/mjbjdic/68400428159.pdfIn PDF document text
    • https://cdn.sqhk.co/wogebebaruro/htDggkr/cut_sound_tiktok.pdfIn PDF document text
    • https://gimelasu.weebly.com/uploads/1/3/4/5/134513778/nexanewikifosubu.pdfIn PDF document text
    • http://xusatekekosigi.iblogger.org/2004_atp_iii_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/kosifodalab/dOhjo6H/ironing_and_washing_clothes_laundry_days.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/IicjToU/bepasuvupevetoxerad.pdfIn PDF document text
    • http://ing-cliente.com/calmradio_com_relaxing_musicfaeh6.pdfIn PDF document text
    • https://cdn.sqhk.co/lisutovudaf/geDigir/50271691587.pdfIn PDF document text
    • https://ruvudiroxutorag.weebly.com/uploads/1/3/0/7/130775702/sejom.pdfIn PDF document text
    • http://maska-respirator.shop/4990643491k7xwp.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/Mgg4GgJ/texas_outdoor_annual_app.pdfIn PDF document text
    • https://tozabofosizo.weebly.com/uploads/1/3/5/3/135340530/622e05e8302.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/jaiajbn/carx_highway_racing_apk_mod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sexikiti.epizy.com/32541197119.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE005 5376 bytes
SHA-256: 16ed88af271593a3878c8c7e123e19bde2477f926042523073149c7eef071393
font_01_sfnt_off0000f228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF228 10048 bytes
SHA-256: 1401a5e83cc374d40691ca48155cc722f85d5181a91fb74e1b2ce12799387d3c