Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6c1bba5f2ba555…

MALICIOUS

PDF

65.2 KB Created: 2021-02-22 17:04:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d5c43c01a026e75dafec51b98926db20 SHA-1: 90e0dc4246bd2325e47d45cae6b838d3b2842160 SHA-256: bb6c1bba5f2ba55586a803f75b9a88e101ff53fb242f800278c57192d31b357a
186 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
  • 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://druttle.ru/wix?keyword=calculating+efficiency+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/dexasubu/jdjghhf/escape_logan_estate_chapter_2.pdfIn PDF document text
    • https://cdn.sqhk.co/rebawigabog/4gejegf/pottery_barn_stockings_woodland.pdfIn PDF document text
    • https://bebamewikirebu.weebly.com/uploads/1/3/0/8/130874540/a5e668ea.pdfIn PDF document text
    • https://pesadosopovito.weebly.com/uploads/1/3/4/2/134235692/8266308.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/xYRwxih/grand_theft_auto_6_trailer_official.pdfIn PDF document text
    • https://zukaxopukij.weebly.com/uploads/1/3/1/1/131164552/6cc87ac.pdfIn PDF document text
    • https://kakifimetuwojo.weebly.com/uploads/1/3/4/3/134317364/5718241.pdfIn PDF document text
    • http://siputofivimib.iblogger.org/emergency_preparedness_and_survival_guide.pdfIn PDF document text
    • https://junuwuka.weebly.com/uploads/1/3/4/4/134479395/lisusejuzivug_gopeporo.pdfIn PDF document text
    • https://vefamomapebimid.weebly.com/uploads/1/3/1/4/131406391/e58531.pdfIn PDF document text
    • https://vexokefiveve.weebly.com/uploads/1/3/4/4/134494279/juvaxusun.pdfIn PDF document text
    • https://sijalafad.weebly.com/uploads/1/3/4/8/134887162/9751ff4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xikepidefam.epizy.com/bhai_dooj_special_whatsapp_status_video.pdfIn PDF document text
    • http://bikemeno.rf.gd/79662103768.pdfIn PDF document text
    • http://turojupa.epizy.com/tobafarejugifumazuxoj.pdfIn PDF document text
    • http://gebogozomusedom.rf.gd/computer_maintenance_report_template.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_off0000c2cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2CF 5308 bytes
SHA-256: 5735234bc606ea745db990dfe8fb64316c2472c8d725a5ca50bb00baa1514f09
font_01_sfnt_off0000d4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EF 10072 bytes
SHA-256: f078d2fbc2a790df532adbd00b3457a3d05a55fd31db850f845a160c0309e814