Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aff6f0165251fdf…

MALICIOUS

PDF

70.9 KB Created: 2021-03-02 17:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: be661113d63e530b333e453272a41ea5 SHA-1: ac5d2a9ef234146ea8d68a321451ac7b16eda5b9 SHA-256: 5aff6f0165251fdfce7badf87141bbf6b25ab1c6af4d0b0e14f21b742eca11a0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=finding+x+and+y+intercepts+worksheet+%2528day+2%2529+answers PDF link annotation
    • http://kopuvimu.scienceontheweb.net/nukizo.pdfIn PDF document text
    • https://pixumoxijabana.weebly.com/uploads/1/3/4/7/134748481/jufed-biwexaxidija.pdfIn PDF document text
    • https://xeropupofusopa.weebly.com/uploads/1/3/0/7/130776394/7359557.pdfIn PDF document text
    • http://9gusevshop.website/traduccion_short_reportz63zz.pdfIn PDF document text
    • http://copyright-rules-help.com/drag_racing_3d_unblocked6nawk.pdfIn PDF document text
    • https://mizemajawoxulu.weebly.com/uploads/1/3/1/4/131437858/xarafa_gezuxugajofav_turag_zinoroput.pdfIn PDF document text
    • https://losuwasujiro.weebly.com/uploads/1/3/1/6/131637226/9504171.pdfIn PDF document text
    • http://daddytestit.xyz/weezer_island_in_the_sun_tabex7tq.pdfIn PDF document text
    • https://gafabudadu.weebly.com/uploads/1/3/1/3/131384489/luvef.pdfIn PDF document text
    • https://dupazenulejafu.weebly.com/uploads/1/3/4/3/134331878/girewazafamevaza.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/57999285505d74oz.pdfIn PDF document text
    • https://wubedalenab.weebly.com/uploads/1/3/1/3/131383767/7ea3456f9.pdfIn PDF document text
    • http://kafidovomiguvo.mywebcommunity.org/taylormade_r15_hybrid.pdfIn PDF document text
    • http://webmastervlad.ru/fufanepipexabapodmbc99.pdfIn PDF document text
    • http://nageramuvepom.mywebcommunity.org/how_to_use_cricut_personal_cutter.pdfIn PDF document text
    • https://kagejiwuj.weebly.com/uploads/1/3/4/0/134095923/9596563.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/facebook_er_apk_for_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/46332722008.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/70375947957.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_off0000d832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD832 5868 bytes
SHA-256: 2159ddc06607c507e9ef40f914327048a3bae4c5e7978e167714663475ef3ad4
font_01_sfnt_off0000ec5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5F 9780 bytes
SHA-256: 6c50deea091bdc68317859840be0c49c00da31f4d566b6283a54695b2890e2e8