Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b622aac600c639…

MALICIOUS

PDF

63.1 KB Created: 2021-02-09 20:18:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: b07938f3c32212e0519259da4457180b SHA-1: f92090573a543a9fe0bb7bc3dbffdf7248d7892f SHA-256: f1b622aac600c6399d73d49e7a5f55bb679fe85c25016bd343823a50e3bfcfce
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://yafferge.ru/aws?utm_term=calories+in+a+sheetz+chili+dog In PDF document text
    • https://cdn.sqhk.co/dukosisevu/bhcRjcS/nosejijoj.pdfIn PDF document text
    • http://wopedejani.iblogger.org/side_menu_android_example.pdfIn PDF document text
    • https://cdn.sqhk.co/kisunika/hiiggjc/xmeye_dvr_online.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/FeVtKgj/92876311346.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_5fd15db956aca.pdfIn PDF document text
    • https://cdn.sqhk.co/movijomo/jbhfWhi/71924724238.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414866/normal_602109067adbc.pdfIn PDF document text
    • http://citimart.online/how_to_fight_sanscsprx.pdfIn PDF document text
    • https://cdn.sqhk.co/fegukajebaj/cTTAihO/new_stick_war_free_legacy_wallpapers_hd_4k.pdfIn PDF document text
    • https://cdn.sqhk.co/madobeborozu/dChaia8/magical_adventure_balloon_rides_del_mar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462096/normal_5ff771ae6c60a.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/Gh7jeje/free_online_screen_recorder_chrome.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444644/normal_5ffcb595b87f1.pdfIn PDF document text
    • http://ueuniti.xyz/744116067541gl2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402717/normal_5fee99c9135d3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xaramoturowuf.rf.gd/arraylist_in_java.pdfIn PDF document text
    • http://mexaxezixolo.rf.gd/lahaina_harbor_breakwall_surf_report.pdfIn PDF document text
    • http://xujariju.epizy.com/java_programming_basics_for_beginners.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_off0000bbdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDF 5156 bytes
SHA-256: ab0edb119310a71f60825d4f13d62ff6d68f5611d1180c90a44989458c8f6d93
font_01_sfnt_off0000cd63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD63 9988 bytes
SHA-256: 7eeac958c4d7d15f625404411e08acf0506d976d5fe5c47bd95260d5713605b3

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