Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b3cbf58d17a24a7…

MALICIOUS

PDF

70.3 KB Created: 2021-02-17 16:03:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 75c5a78f39bcb2e8cfe69be715afe6ff SHA-1: 24120f84646b5d8794570c96299e2b1d38ba84a0 SHA-256: 7b3cbf58d17a24a7880e43ba0fc9f78479dc12f172a1e0c09f2d9e3cbc7f3d9b
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://seumenha.ru/wix?keyword=tempering+tank+for+tankless+water+heater PDF link annotation
    • https://benokonafininu.weebly.com/uploads/1/3/4/6/134606635/7083e1d0947.pdfIn PDF document text
    • https://cdn.sqhk.co/wujamufaw/hgZhiji/gozisipamegifepazekoko.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/hIdF0UP/81468949115.pdfIn PDF document text
    • https://cdn.sqhk.co/sumefixes/hdiingd/lobarifufek.pdfIn PDF document text
    • https://cdn.sqhk.co/tusupuwadoda/5gcrjiV/artillery_fire_mission_ringtone.pdfIn PDF document text
    • https://cdn.sqhk.co/dagufiwus/jadmyjf/turn_off_lock_screen_on_iphone_10.pdfIn PDF document text
    • https://diwekivoveludu.weebly.com/uploads/1/3/5/3/135313391/xarezuzigogunat-vokozaxelalate-wumisin.pdfIn PDF document text
    • https://nogikukejigili.weebly.com/uploads/1/3/0/8/130873965/wajidexinerituv_liwoxobobesugo.pdfIn PDF document text
    • https://cdn.sqhk.co/nufopusifa/Ggghhq6/jixizafeluxininero.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/xukonakefules/kapapejo.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/bose_quietcomfort_35_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/4542679621.pdfIn PDF document text
    • http://fujesotes.epizy.com/billboard_design_template.pdfIn PDF document text
    • http://palalujopaxuv.epizy.com/lisopesago.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/what_is_sap_wms_module.pdfIn PDF document text
    • http://kafuvaxuxele.epizy.com/jivugutabevososewub.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_off0000d608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD608 5420 bytes
SHA-256: 7d8ebdbb051b9cf4c9c2ec7219951b896692faa4553dbdfdd6dd4808534e7d86
font_01_sfnt_off0000e861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE861 10360 bytes
SHA-256: 9a8e67c6143c78ae0df02c7412f12b201320ddeb245ffcaac1f0ed2fa6a24d4b