Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf2ebaf16e9fde2b…

MALICIOUS

PDF

77.3 KB Created: 2021-03-19 19:01:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 57f02b9126e341bcd5a27deb23a35c07 SHA-1: b14d46dbb924a83993138489ee5c12ca36d0c6cc SHA-256: cf2ebaf16e9fde2be34af5249ef0c9a0a5eef47a1326d2dd8de0cd9eab827c19
126 Risk Score

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 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/award?keyword=kabbalah+libros+pdf+gratis PDF link annotation
    • http://vaxisezawoged.scienceontheweb.net/vogele.pdfIn PDF document text
    • http://navevukosuso.mypressonline.com/craftsman_dovetail_jig_2570.pdfIn PDF document text
    • http://kamefutebiwef.mywebcommunity.org/the_courtier_baldassare_castiglione.pdfIn PDF document text
    • http://goduvide.22web.org/premiere_pro_cc_wedding_templates_free_download.pdfIn PDF document text
    • http://desawigoxikugaw.mywebcommunity.org/1580279469.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/cuanto_es_0.2_metros_en_centmetros.pdfIn PDF document text
    • http://zevibeponakat.getenjoyment.net/wugazuxipixapuv.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/dikigarovuxiw.pdfIn PDF document text
    • http://fimewovoko.getenjoyment.net/7054859928.pdfIn PDF document text
    • http://xovuwowim.mypressonline.com/how_to_grow_tomatoes_in_houston.pdfIn PDF document text
    • http://gaxesujite.medianewsonline.com/41685941776.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vexeger.rf.gd/depolelidekokumubad.pdfIn PDF document text
    • https://e5aadbcf-511f-4ee2-989a-4410a22eeed0.filesusr.com/ugd/64930c_7d3373d6e5434ed386efbd8551f2c276.pdf?index=trueIn PDF document text
    • http://wimapaduz.epizy.com/91260283867.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/nojafoxikukofivafoxapu.pdfIn PDF document text
    • https://ed59cdd8-0d75-4634-8bb2-7afdb9da103e.filesusr.com/ugd/9cb112_ccae9694b7584ebaae415b011310ea59.pdf?index=trueIn PDF document text
    • http://wamesugome.rf.gd/heaven_casteel_series.pdfIn PDF document text
    • https://e3e1c2aa-7f41-47b0-8c2f-d823cb48b857.filesusr.com/ugd/7598fa_5af127fa0cc7426894f471b4b835716c.pdf?index=trueIn PDF document text
    • https://f6ce3cfb-f922-470c-9e0e-eaf724001b0e.filesusr.com/ugd/defcb2_5233d2c31a0f4b49a6b015aaa1e4ad45.pdf?index=trueIn PDF document text
    • http://pirafabitibabik.rf.gd/zegodebi.pdfIn PDF document text
    • http://felugibesixe.onlinewebshop.net/bunker_hill_wireless_security_camera_62367_receiver.pdfIn PDF document text
    • http://niwurekatexo.atwebpages.com/shimano_di2_junction_box_band.pdfIn PDF document text
    • https://2065f6f1-29fb-48ac-a230-4f4ab2d4b746.filesusr.com/ugd/b62953_86b06e354a7e41188f55f54ff270b91a.pdf?index=trueIn 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_off0000ef6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6B 5412 bytes
SHA-256: f6122a08b604c3fdd9ec3d39aae06685db021d6e0d3229a6c69e0b2bc48a4bde
font_01_sfnt_off000101c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C7 12104 bytes
SHA-256: 058826b4bd6f07b7adb6c8f82a3e2bff78d33857c1518568c02572b49277cc73

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