Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5dda1a2f0c21699…

MALICIOUS

PDF

68.5 KB Created: 2021-02-27 12:28:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ab3c3d3c60014078fd232a59f230cb70 SHA-1: 31fd7a0432b69b2dffd065e35f535ae0650aae26 SHA-256: a5dda1a2f0c21699620734261c8f02358243349a41f7ff30a19b452bebe6cc4b
126 Risk Score

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://gimoguvi.ru/award?keyword=solar+eclipse+ppt+middle+school PDF link annotation
    • https://cdn.sqhk.co/vilubofi/gjZ1geo/vusalu.pdfIn PDF document text
    • https://cdn.sqhk.co/pijovowifil/cigihjb/lifejojanadad.pdfIn PDF document text
    • http://indonesia2health.online/integration_of_cos_x_minus_sin_x_by_1__sin_x_cos_xtpe84.pdfIn PDF document text
    • http://complect-tech.ru/xizanabanulazadk16f0.pdfIn PDF document text
    • http://thestablestl.com/soundcraft_ui_12_user_manual6qca6.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/gd69pRE/zombie_age_3_game_guardian.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406776/normal_601d1307dc56d.pdfIn PDF document text
    • http://localdesign.me/blender_2._8_eevee_manuals4m18.pdfIn PDF document text
    • http://xipevufizokev.iblogger.org/supelawosowe.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/eJJchcS/27300493741.pdfIn PDF document text
    • http://m-laskin.ru/lifatibiputasipocn15y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sesugemedolaf.rf.gd/male_psychology_of_love.pdfIn PDF document text
    • http://pupuwifemo.rf.gd/82011667223.pdfIn PDF document text
    • http://namidonom.epizy.com/bradford_council_report_missed_bin_collection.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/allied_school_song_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/76546123006.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/beretta_uniform_pro_25_cartridge_pouch.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/83840487509.pdfIn PDF document text
    • http://badubitoj.epizy.com/kidopesabirurorejunu.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_off0000d02c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD02C 5416 bytes
SHA-256: 1e65cbeb9a6af66e1dda8d732186e293d499fa192db19d549b358064f0095ed5
font_01_sfnt_off0000e264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE264 10028 bytes
SHA-256: 612560719e15c2c0f923b194da63d09a675c40ace6540a125a0c19029581c773