Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc67216415c10eb1…

MALICIOUS

PDF

71.5 KB Created: 2021-02-17 13:47:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5db3c1660630abfa8c422bd7497c41ec SHA-1: 92caca83cb22b57d1a452f898791151be456c841 SHA-256: cc67216415c10eb1089a10b8353212b82e0cfa79ca1295cab239faa4c64df135
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than 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.
  • 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://crophysi.ru/wix?keyword=apology+letter+to+my+daughter+from+dad In PDF document text
    • https://cdn-cms.f-static.net/uploads/4449616/normal_5fd3cd364347b.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/Rhggcii/37779641198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449205/normal_5fe860d44c32f.pdfIn PDF document text
    • http://health-top.ru/glock_armorers_manual_2017lplkz.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/fdfwEgc/pokegaguzasunevenekilujim.pdfIn PDF document text
    • http://natorg.fun/450740086410o42i.pdfIn PDF document text
    • https://cdn.sqhk.co/jibenapola/aggigct/73314531899.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486743/normal_5ff01b29c107b.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/gdjhgfb/dakikotula.pdfIn PDF document text
    • http://rocketdocs.us/sijimoxajenulit7dokl.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/jbLfw6w/modern_living_room_decorating_ideas_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/dumotometapo/jq8jgnc/wifi_analyzer_free_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/kajurineg/iaaGNgd/sim_toolkit_app_not_installed.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/ib2id2y/zen_pinball_ps4_trophy_guide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://waxodomopupu.epizy.com/65057302768.pdfIn PDF document text
    • http://gusalixofunek.epizy.com/bofevetejisugutonowutiv.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_off0000dd3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD3A 5368 bytes
SHA-256: 12e7d85c00764aa47b0378eff7939c4f562296f7d39f61fbe94fd12f3ff70b2b
font_01_sfnt_off0000ef59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF59 9888 bytes
SHA-256: fea59906ec1324a45d73f548629aeb388feb2e148b03133e9464c7b4620fa44d