Malicious PDF — malware analysis report

Static analysis result for SHA-256 df56adb37108c6cf…

MALICIOUS

PDF

70.3 KB Created: 2021-02-10 15:16:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 52303910bd7fdaacf881eecd8c77c42a SHA-1: 0cb922274b8e228f9cea79096858f5863180e7d4 SHA-256: df56adb37108c6cfb4c42c56b994992e32d0499046c12ebea495143284428c2c
166 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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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.
  • 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://jacksth.ru/wb?keyword=gastric%20cancer%20treatment%20guidelines%20uk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4376105/normal_5fdd910cb8ecc.pdfIn PDF document text
    • https://cdn.sqhk.co/nomazotesi/VAjjEjF/57093430022.pdfIn PDF document text
    • https://pegugigatusib.weebly.com/uploads/1/3/4/4/134460290/9510969.pdfIn PDF document text
    • http://privateguardingserviceagainstdanger.site/xanasegunobotomije9pu5u.pdfIn PDF document text
    • http://shimano-stradic.ru/xiboxazepanawiwuzivepu06p2p.pdfIn PDF document text
    • http://samozanyat.info/android_adf._ly_bypass5akfs.pdfIn PDF document text
    • http://politach.com/you_ve_been_jingled_template27vcr.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/fAgJivp/56814676985.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/1692154.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452193/normal_600da2a28ba0e.pdfIn PDF document text
    • https://xewixubigikuj.weebly.com/uploads/1/3/4/8/134892453/wifolupebuvidanarile.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/u6ogiW3/electron_configuration_of_sulphur_in_sulfite_ion.pdfIn PDF document text
    • http://erogan-columbia.site/audi_sport_racing_bike_pricex18th.pdfIn PDF document text
    • http://poverkavoda.website/negative_space_drawing_definitioni8owu.pdfIn PDF document text
    • http://select-get.top/baby_names_that_start_with_a_kqyvdk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495858/normal_5fee72facedeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_5fea2af737aad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457281/normal_5fd671527b7c5.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_off0000d6aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AA 5352 bytes
SHA-256: 482b7f770134f3fbfa6ef4a68bcf8f3b64262863eefefaf9d63d8dab2c1ce8b7
font_01_sfnt_off0000e8cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CC 10304 bytes
SHA-256: f81a5e01d0e5553ca94f9eb74ad159f05676a434e626f60469c8f14022cc813a

Open this report in the interactive analyzer, or submit your own file for analysis.