Malicious PDF — malware analysis report

Static analysis result for SHA-256 28afb7907be012cc…

MALICIOUS

PDF

72.8 KB Created: 2021-02-25 17:16:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: efe64b0ebfa0cf68c61f461205f4449b SHA-1: 436200c8c243ef94c99ceae0030bc58cfbb63cf7 SHA-256: 28afb7907be012cc9b88e476de34a9aa5bdeda073a09ef43b0df665bac13e127
126 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
  • 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://maypoin.ru/award?keyword=how+to+turn+on+weber+grill+spirit+2 PDF link annotation
    • https://cdn.sqhk.co/fakomuse/0soiIGL/nosojenipumoxuvuwumos.pdfIn PDF document text
    • http://xujilutobidiko.iblogger.org/wimime.pdfIn PDF document text
    • https://cdn.sqhk.co/suxevevagova/gigezF0/67440092430.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/1ZidoVT/nedbank_start_up_business_loan_requirements.pdfIn PDF document text
    • https://cdn.sqhk.co/gewigerajoru/hchchci/42114568922.pdfIn PDF document text
    • http://wawupamol.iblogger.org/63820673825.pdfIn PDF document text
    • http://fizasibako.22web.org/francesca_battistelli_songs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/lgf4Jic/pixel_art_color_by_number_online_unblocked.pdfIn PDF document text
    • http://gbarb.me/96474982308c9hif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426262/normal_601f7354dfa26.pdfIn PDF document text
    • http://eurozone.pro/43972148162up0ov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374185/normal_5fdf283ed4e00.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wevaxelim.rf.gd/transfer_on_death_deed_form_arkansas.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/zuligiwakofena.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/brave_new_world_chapter_3_questions.pdfIn PDF document text
    • http://moretavumafoge.epizy.com/17403054480.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/diana_death_news_report.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/cet_davv_form_2019_date.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_off0000e0d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D2 5104 bytes
SHA-256: fdd407746eb7bc0b0a533178040a73c25952b57d8060c5c9aacd86527c2c542f
font_01_sfnt_off0000f253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF253 10404 bytes
SHA-256: ade5a2b789ac1aeff3987db03e11a685c51afab556e6b6216c1d7a23edcca2dd