Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e277413623c65c…

MALICIOUS

PDF

70.2 KB Created: 2021-02-17 23:15:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d28bf735207724a2b4ab80b070f13b1b SHA-1: 0e54c222046bd5c097d22464a6600ba5dce51dba SHA-256: 52e277413623c65c9a953388f43f04b2d53c79376ee78bba0419da6a2c30372e
186 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
  • 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://maypoin.ru/123?utm_term=what+is+my+zip+code+usps PDF link annotation
    • https://cdn.sqhk.co/nupasoxure/0haTjbI/master_lock_trigger_lock_replacement_key.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/gjhjnjc/8106776653.pdfIn PDF document text
    • https://cdn.sqhk.co/gumojitoxowu/jifgija/wutotexevuvogibugokijamux.pdfIn PDF document text
    • https://wumibatolazonik.weebly.com/uploads/1/3/1/4/131437616/redalowamani-walazofatike.pdfIn PDF document text
    • https://jipofaxinevafud.weebly.com/uploads/1/3/4/3/134350183/nedalavow_basugir.pdfIn PDF document text
    • https://cdn.sqhk.co/penutizufib/g7Ljfh6/45561941601.pdfIn PDF document text
    • https://linebabeta.weebly.com/uploads/1/3/5/3/135317009/7f5053c.pdfIn PDF document text
    • https://cdn.sqhk.co/webepinovet/gfhdjgg/kopipemumezog.pdfIn PDF document text
    • https://cdn.sqhk.co/muribirigim/jOnnhcE/light_up_christmas_garlands_decorations.pdfIn PDF document text
    • https://faxarumi.weebly.com/uploads/1/3/1/6/131606834/vetow_tozimosami_tuxozogelujag.pdfIn PDF document text
    • https://nemaxololele.weebly.com/uploads/1/3/5/3/135304154/bewed.pdfIn PDF document text
    • https://fumevixupi.weebly.com/uploads/1/3/0/7/130775707/xukozivuvimi.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/SgjjkAL/mx_video_player_apps_apk.pdfIn PDF document text
    • https://zaranofe.weebly.com/uploads/1/3/5/9/135967679/mufajibomiwe.pdfIn PDF document text
    • https://cdn.sqhk.co/xovatagemi/7NidZI2/67450201185.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vopapokolozanum.rf.gd/57693808541.pdfIn PDF document text
    • http://gedawov.epizy.com/25572935416.pdfIn PDF document text
    • http://vesijugi.epizy.com/conair_garment_steamer_reviews.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_off0000d5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5F7 5348 bytes
SHA-256: 3573985141f9e29c6cffbc3532f01accd9008a268de4a65808b3fdc5a3048edc
font_01_sfnt_off0000e81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE81D 10524 bytes
SHA-256: 830352fc4fbd5c3c8e24205d8ffa381c6c1aa2585dbf511836c22297e56e14a8

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