Malicious PDF — malware analysis report

Static analysis result for SHA-256 4981a5cb10234d1a…

MALICIOUS

PDF

76.0 KB Created: 2021-02-27 02:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2e2b75faeb427c56904a1b2921501cce SHA-1: 13b28c89f308db5720e38fd3ccd7c94985d7b28a SHA-256: 4981a5cb10234d1a35c59840aacd014d3b1234dc34b38611986084d2e67d93da
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/aws?utm_term=twilight+part+2+full+movie+download+in+hindi+filmyzilla PDF link annotation
    • https://cdn.sqhk.co/lifudidu/bUveHgf/airplane_explorer_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tejosepu/qgfaUaa/2147595372.pdfIn PDF document text
    • https://kojezuduw.weebly.com/uploads/1/3/5/3/135326104/nizorekowozol_sorifoxokumazaf_mibuxesujis.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/aggfhbz/talking_girlfriend_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxofidipo/fiijhjb/strength_training_workout_gym.pdfIn PDF document text
    • https://xudagemiribu.weebly.com/uploads/1/3/1/3/131378943/labame_ragizulegu.pdfIn PDF document text
    • https://sarutofujatazix.weebly.com/uploads/1/3/4/5/134584212/gugiwibar.pdfIn PDF document text
    • https://lotaximadezepa.weebly.com/uploads/1/3/1/3/131379514/9236360.pdfIn PDF document text
    • https://cdn.sqhk.co/xapawavuma/ILAhbgg/plants_vs_zombies_hile_apk_oyun_indir_club.pdfIn PDF document text
    • https://wesuzekubiw.weebly.com/uploads/1/3/1/6/131607103/8820966.pdfIn PDF document text
    • https://sozatoma.weebly.com/uploads/1/3/4/4/134484551/0df24b1eb.pdfIn PDF document text
    • https://videxopejevis.weebly.com/uploads/1/3/5/3/135333638/157bc.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/ib3NdJh/clear_plastic_screen_guard.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zepinurubav.epizy.com/9494332386.pdfIn PDF document text
    • http://litopojijerel.epizy.com/nacte_guide_book_2018.pdfIn PDF document text
    • http://wupebixa.epizy.com/the_necklace_by_guy_de_maupassant_theme_of_the_story.pdfIn PDF document text
    • http://wexipara.rf.gd/turozadasalezopep.pdfIn PDF document text
    • http://naxinusidado.epizy.com/crown_cdi_4000_price.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_off0000ec55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC55 5664 bytes
SHA-256: 30e7aa97326c76f2b70672085c8e3d49bfc850c4bab32a30e775377f359741d7
font_01_sfnt_off0000ff9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9A 10212 bytes
SHA-256: 05cce26c2bc9e1b0fde69a0cc4694f38dbadf61608f8481ff759e2e12553f1e9

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