Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5c2717a0bce4d3b…

MALICIOUS

PDF

71.2 KB Created: 2021-02-27 16:17:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 796da00593f3afac8951423ee7d535ab SHA-1: 611c3b49fedcf7e95f5fa79ea401b2b9c68579d5 SHA-256: e5c2717a0bce4d3b26bf0941c16167c834a49f7363a94826e61bb38bc1cc22ca
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://kuzutuzo.ru/award?keyword=roomba+595+manual PDF link annotation
    • https://cdn.sqhk.co/jofutagi/jfibWid/dead_effect_2_mod_apk_data_offline.pdfIn PDF document text
    • https://wadasowodasi.weebly.com/uploads/1/3/5/3/135316150/guguteniloko.pdfIn PDF document text
    • https://cdn.sqhk.co/firokizita/iiZjbqR/briefings_in_bioinformatics_word_template.pdfIn PDF document text
    • https://mulokigapasol.weebly.com/uploads/1/3/1/0/131070847/943ff6cd47b17b5.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/agcjivK/88638557674.pdfIn PDF document text
    • https://vemenujobife.weebly.com/uploads/1/3/5/3/135399872/7569717.pdfIn PDF document text
    • http://consequences.space/cuisinart_burr_grind_coffee_maker_problems60rbj.pdfIn PDF document text
    • https://cdn.sqhk.co/nosimasiv/hzGgggS/23143270897.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxevabuvix/hjhyaAz/last_cloudia_tier_list_2020.pdfIn PDF document text
    • https://noxaxubobef.weebly.com/uploads/1/3/1/3/131380993/pusazufewip-jiwubumarinojuj-fativu.pdfIn PDF document text
    • https://kujibolivobukib.weebly.com/uploads/1/3/1/1/131163991/bbee39.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/kafises/weather_report_in_mangalore.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/vidmate_app_hd_video.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/busefudabokononuponugukox.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/15479910689.pdfIn PDF document text
    • https://s3.amazonaws.com/gusule/31104831944.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_off0000dbfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFE 4984 bytes
SHA-256: 4b56af5d10640b245d8c70d0753c2fcced30d6b7046d6dfb34d9d8e100a843f0
font_01_sfnt_off0000ecea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECEA 10176 bytes
SHA-256: 02a3f3a9b08cda2377b3e7961c738851527c10084aa857dcfe9a56f54d56182c