Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10c7e2b22dfcf9b…

MALICIOUS

PDF

67.1 KB Created: 2021-02-28 08:14:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e8707b168591cb8e35c6a0748dc6694b SHA-1: 35476d9cdda0ac3f71634bbacbbeb0bdc01c2f78 SHA-256: c10c7e2b22dfcf9ba56ed8e6ca2ac8b2523034bac21a4d95fc3565005ed97f0d
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://fokemale.ru/wix?keyword=lesson+quiz+11-1+growth+and+expansion+answer+key PDF link annotation
    • http://shtangelkipokupkiitd.online/25125500171b3ewc.pdfIn PDF document text
    • http://starconflict-game.ru/48174596669d9zm9.pdfIn PDF document text
    • http://blancop.xyz/vejosiwoizx.pdfIn PDF document text
    • http://megatorg.ru/legebinixizuzetrplnu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487918/normal_6038ef758f931.pdfIn PDF document text
    • http://myfirstsite.xyz/orange_movie_audio_songskh1ok.pdfIn PDF document text
    • http://help-copyrighteamservice.com/sedirawurowonutinopiwukuj5re7.pdfIn PDF document text
    • http://hookup755.fun/wazojivilosulijezubejekikvx94f.pdfIn PDF document text
    • http://difavusimope.iblogger.org/numero_de_avogadro.pdfIn PDF document text
    • http://copyright-services-us.com/risk_of_rain_characters_guide77x07.pdfIn PDF document text
    • http://lnstagram-support.live/85659187442qmgl.pdfIn PDF document text
    • http://organicnu.info/biloxiw1aim9.pdfIn PDF document text
    • http://bt-management.website/newoxivefoxupezeritagazesvcx5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://loworalaxarugo.rf.gd/android_cannot_delete_google_account.pdfIn PDF document text
    • https://s3.amazonaws.com/gapuruxumeg/71741881069.pdfIn PDF document text
    • http://vajowevub.epizy.com/jagajezotojef.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/31005001412.pdfIn PDF document text
    • http://beturatigamoli.epizy.com/10000_reasons_worship_song_lyrics.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_off0000ca1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA1E 5716 bytes
SHA-256: 29d6c3131c0241518a621356fb8766558e26f3146e8ba02b9d3a2fa9968a4952
font_01_sfnt_off0000ddbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBF 9772 bytes
SHA-256: 2b38e1c1f304abba80add4970a708b19696d9a467d9dfc76be6a04b2686c24b7