Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a12aa8e1738ee9…

MALICIOUS

PDF

68.1 KB Created: 2021-02-24 22:14:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e7b3a5339249ad01e8f00950e51eaea9 SHA-1: 0ecf525971cc34fae8da9d0aedf446924fa52232 SHA-256: c6a12aa8e1738ee918c49c236370be730ab1cf62af3aa05d8d3bbae57b48c693
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://leonvi.ru/wix?keyword=brick+breaking+unblocked PDF link annotation
    • http://fejovamujolod.22web.org/lolinatapopisalabi.pdfIn PDF document text
    • http://loginwithfb.site/human_trafficking_statistics_by_state_map45gib.pdfIn PDF document text
    • https://cdn.sqhk.co/xogeloke/hh8eLDQ/85747970353.pdfIn PDF document text
    • https://cdn.sqhk.co/noxomosanena/7DBisXH/zaberuma.pdfIn PDF document text
    • http://nakekizedexu.getenjoyment.net/17022840783.pdfIn PDF document text
    • http://natlegend.space/the_culture_projectdt3lw.pdfIn PDF document text
    • http://gayerkan.com/career_path_template_for_employeruimru.pdfIn PDF document text
    • http://atlas-copco.su/331632923075pc8r.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/ludevofuneme.pdfIn PDF document text
    • https://cdn.sqhk.co/fepexeguma/jjDfxij/spacex_live_bbc_news.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420906/normal_602c7a1a2e76f.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/YIfggid/larry_miller_theater_centerville.pdfIn PDF document text
    • http://front-glass.website/yamaha_a_s301_reviewep08b.pdfIn PDF document text
    • http://tupaxeguna.scienceontheweb.net/algebra_with_pizzazz_did_you_hear_about_page_103_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ced0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED0 5184 bytes
SHA-256: 5467b46ab52c3e20507a956c6edf42284d4511b298d25e142d27d8dfe3f0349c
font_01_sfnt_off0000e082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE082 10348 bytes
SHA-256: df5339b1aa422c03703a31a86a271087135c5de6ea9e517a692ee953d6fbe45b