Malicious PDF — malware analysis report

Static analysis result for SHA-256 60664a23723a3d21…

MALICIOUS

PDF

124.5 KB Created: 2021-05-07 06:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a1f10c3aa47dcb96b76a4d7baa1380f5 SHA-1: dd1c04d986772fe7098b6ff17b693a6300f4f517 SHA-256: 60664a23723a3d218491bde186600e8f238703bba5473b63ef771eb6a164ab23
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/strik?utm_term=stealth+cam+stc-p12+settings PDF link annotation
    • https://cdn.sqhk.co/dobulefipuji/U6ehihh/8788791230.pdfIn PDF document text
    • https://cdn.sqhk.co/rukefazox/XxjhJje/24652590303.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/47429028872z0l1w.pdfIn PDF document text
    • http://azakalaza3.xyz/pimobuledafemosexalazumul0brf.pdfIn PDF document text
    • http://bluebadgeapproval.com/win_the_lottery_method_reviews7eeq5.pdfIn PDF document text
    • http://getveran.site/dixie_narco_501e_cam_settings6ijue.pdfIn PDF document text
    • http://asia.kiwi/beachbody_ultimate_reset_guidebook39vk1.pdfIn PDF document text
    • http://laithub.pro/7466370288873ely.pdfIn PDF document text
    • http://scoretdho.best/66043016294acwo4.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/Dsic1jc/kotedorozigajorosugov.pdfIn PDF document text
    • http://ig-soft-team.com/how_full_is_your_bucket_powerpointxkmcw.pdfIn PDF document text
    • http://free-at.pro/descargar_gta_vfs71q.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/TicQmhi/nenawazijobavowukoru.pdfIn PDF document text
    • http://yewes.fun/480385032193wnu3.pdfIn PDF document text
    • https://cdn.sqhk.co/ponajadu/lm8Tcic/40496827033.pdfIn PDF document text
    • http://shoop-ff.ru/co___t_d___c____answer4jz0f.pdfIn PDF document text
    • http://about-central.com/rca_voyager_3_hard_resetdvwng.pdfIn PDF document text
    • http://lnstagramcopyrightcenter.com/surah_waqiah_arabic_textxhnr0.pdfIn PDF document text
    • http://gnatural.space/vuvabacw9g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7936e14e-4b92-496f-aec4-96e72ef4f231/what_is_political_discourse_theory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31af11c6-af46-43ce-bf1b-ae0025cab243/55809689985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94f57f0e-92df-4251-a930-c02e78012022/69079571879.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a67d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A67D 5568 bytes
SHA-256: 0f8ee473e82f42b12628fbafae297af0787047320a54be3a715c1815dae75808
font_01_sfnt_off0001b95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B95B 12664 bytes
SHA-256: 7ec8ca1e9d2bc4d526a53c772c065bedfcdcbad93d50019ebbe01beb2491dd00

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