Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a3d232d008834d…

MALICIOUS

PDF

70.9 KB Created: 2021-03-01 17:13:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 101fa1b7d45d0f4145f15b2fd49ae691 SHA-1: d5a21465a8c6c3c7d23ce23ac29fd05b7b86a08e SHA-256: b7a3d232d008834df3302ecafdd6377e77850395773be1272dbb17b3c5b24a4e
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://vilenefex.ru/award?keyword=sigma+spectrum+infusion+pump+battery PDF link annotation
    • https://tatogupuragafa.weebly.com/uploads/1/3/4/0/134096405/roxevirisexokivajob.pdfIn PDF document text
    • https://jononosafopobof.weebly.com/uploads/1/3/4/6/134649788/dd8f6e7.pdfIn PDF document text
    • http://myyshooop227.site/troy_bilt_pony_rear_tine_tiller_manualbmp3h.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/NKhhhDh/paserogebutu.pdfIn PDF document text
    • https://lutaxebibutemun.weebly.com/uploads/1/3/1/3/131380730/e38eced5.pdfIn PDF document text
    • https://zitakutuseg.weebly.com/uploads/1/3/5/9/135994262/lagigedumirisinola.pdfIn PDF document text
    • http://hookup666.site/briggs_and_stratton_replacement_part_numbersjnocp.pdfIn PDF document text
    • https://jovovanin.weebly.com/uploads/1/3/1/8/131871717/kuloboku.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/does_dunkin_donuts_have_doordash.pdfIn PDF document text
    • http://itwomen.space/lufiwororigatuvipimukunoiq2ky.pdfIn PDF document text
    • https://cdn.sqhk.co/nasubivapu/szhj5fJ/lenovo_yoga_c740_camera_not_working.pdfIn PDF document text
    • http://soldonlittleton.com/66952934406sx9s.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/hcdKheE/pick_me_up_similar_games_download.pdfIn PDF document text
    • http://xinuvaro.sportsontheweb.net/is_hvac_a_good_career_for_mechanical_engineers.pdfIn PDF document text
    • http://fabermanufacture.ru/4539408041760wq5.pdfIn PDF document text
    • http://smm-target.ru/lokudefojidui2c0k.pdfIn PDF document text
    • http://newuwedeza.mypressonline.com/43383790001.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/faxaxos/automatically_pictures_in_outlook_2013_gpo.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/fasarizaluvevitojogof.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/kung_fu_hustle_2004_hindi_dubbed_full_movie_download_300mb.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_off0000d6c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C7 5648 bytes
SHA-256: d22bae9974c85b90d8616af8301e8e086893bc21b90285d7b8c55e617479979c
font_01_sfnt_off0000e9f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F3 10696 bytes
SHA-256: 7a3e383b9f1289f7a05ae2b90d53c6946da050b74f3bbaecfee12559fe5ab339

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