Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cedc326e1c0370b…

MALICIOUS

PDF

69.0 KB Created: 2021-02-22 18:53:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 61c68b0c9855653cfa1aff404aacc8d2 SHA-1: 95e519973d3b06177b3e5d2d46537d06068d7527 SHA-256: 3cedc326e1c0370b2814b6dd7a3266fc2d9bba605106b4ae0c153ebed21a492c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=pandora+apk+hack In PDF document text
    • https://dunopupusegujuz.weebly.com/uploads/1/3/4/3/134348927/zewigawanotum_lawewon_sigawulurukogew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409246/normal_5fcf1ec40087e.pdfIn PDF document text
    • https://cdn.sqhk.co/xipitufekaru/hgMidja/draw_so_cute_baby_groot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5fd821f6de683.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/64hilgf/pafudafodurara.pdfIn PDF document text
    • https://sikenobavusemel.weebly.com/uploads/1/3/2/6/132682861/fotidaxinaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384039/normal_6030008e1d14d.pdfIn PDF document text
    • https://porukugo.weebly.com/uploads/1/3/1/3/131380087/bebewex.pdfIn PDF document text
    • http://vykupavto54.ru/vupisogekilevexujonotfi52c.pdfIn PDF document text
    • https://posasuzu.weebly.com/uploads/1/3/2/7/132710669/nojufolup.pdfIn PDF document text
    • https://cdn.sqhk.co/nonuripot/7jbdjfU/tubarokatemolagu.pdfIn PDF document text
    • http://virona.org/is_jelly_beans_good_for_toddlerse5vsv.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/jjhhjeO/fesareteluk.pdfIn PDF document text
    • http://3203epworthcres.com/tijagazaxosuxowojexubz4rik.pdfIn PDF document text
    • https://ledapenilodaro.weebly.com/uploads/1/3/1/0/131070651/jegimowijer_zelizazo_jobolopu_pukobonaf.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwopazeg/hdhBtcV/37306585183.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/qdgjgih/mini_golf_jurassic_mod_apk_revdl.pdfIn PDF document text
    • http://changely.club/los_medios_de_comunicacion_empresarialna4yb.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_off0000d561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD561 5016 bytes
SHA-256: c2de4755761a9430d8eb218369417e6144022ad8c70136cc9c8e1fe42bf8c71f
font_01_sfnt_off0000e669.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE669 9684 bytes
SHA-256: dcaf4be0bd3dea0a0eefa03e9476cbde555c116cda7ddac8cebdbe87c1d5875b

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