Malicious PDF — malware analysis report

Static analysis result for SHA-256 277fd2d1b65b3180…

MALICIOUS

PDF

75.6 KB Created: 2021-01-30 20:59:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3649950215f4d632585ee50584570f83 SHA-1: a88327c800bbd2ba96351519d21d6ae2ed0b253b SHA-256: 277fd2d1b65b3180d663cdc208dd790a099a01eedc70e95f5203e7c75144482a
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://baarspo.ru/wb?keyword=will%20you%20press%20the%20button%20game PDF link annotation
    • https://sinegozedajosor.weebly.com/uploads/1/3/1/8/131871849/mumemo-pulusuti-tajadododoz.pdfIn PDF document text
    • http://vipadminler.org/48040351472o24od.pdfIn PDF document text
    • https://jopokoguse.weebly.com/uploads/1/3/0/8/130874396/8c02fda.pdfIn PDF document text
    • https://jetovalanowu.weebly.com/uploads/1/3/0/7/130739462/kutugi.pdfIn PDF document text
    • http://blognews.top/sinteze_istorie_academia_de_politiew4ceh.pdfIn PDF document text
    • http://romeital.space/formula_molecular_ejercicios_resuelthzysg.pdfIn PDF document text
    • http://tevuvisena.iblogger.org/platformers_on_switch.pdfIn PDF document text
    • http://groshyk.site/47712270011avtmz.pdfIn PDF document text
    • https://mipapipav.weebly.com/uploads/1/3/4/0/134012398/zepozotun.pdfIn PDF document text
    • http://com-signto6.xyz/sap_abap_function_module_to_send_email55pq6.pdfIn PDF document text
    • https://gifimebanu.weebly.com/uploads/1/3/5/3/135306234/8894422.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pupekulojam.epizy.com/food_handlers_test_answers_arizona.pdfIn PDF document text
    • http://vajitefafuxuz.epizy.com/histologie_tube_digestif.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/define_worksheet_name_vba.pdfIn PDF document text
    • http://fadifisevak.epizy.com/order_of_operations_worksheets_grade_6.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_off0000e924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE924 5488 bytes
SHA-256: 0e0ebde43aa2949c82e81b8e789361cd4987f1e0b497dd81906b8149934e3ef2
font_01_sfnt_off0000fbb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBB4 11116 bytes
SHA-256: 7595927fc027870970a00d79c3f9d6b27f115c347dfe881b88a799ca12d4ba83