Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc0ffa12dd5713d1…

MALICIOUS

PDF

72.5 KB Created: 2021-03-02 17:01:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: abbde0443d3781acf4f4120db159b63e SHA-1: 1571a72920b5466679c5df7623df0f5ceb69177e SHA-256: fc0ffa12dd5713d1f906713b18fc724007ca70777a4186038504c68d7eae63b2
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ponafet.ru/award?keyword=verbs+worksheet+2nd+grade+free PDF link annotation
    • http://supermagazforsale1.xyz/race_3d_apk_downloadulgfp.pdfIn PDF document text
    • http://blancer.xyz/nimejogitikenosakg7eag.pdfIn PDF document text
    • http://flebolog24.com/software_development_engineer_amazon_salary_london7i0bb.pdfIn PDF document text
    • http://kokolonesafu.getenjoyment.net/cuisinart_automatic_grind_and_brew_thermal_troubleshooting.pdfIn PDF document text
    • http://look-hotel.com/grade_1_homework_worksheets5brhl.pdfIn PDF document text
    • https://sogifeni.weebly.com/uploads/1/3/2/7/132712483/9084576.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/89120745642.pdfIn PDF document text
    • https://xulakuvoloja.weebly.com/uploads/1/3/0/8/130813987/pixarujarejosek_xojiramava.pdfIn PDF document text
    • https://jejofiwapo.weebly.com/uploads/1/3/5/3/135312812/xasufexojilevato.pdfIn PDF document text
    • https://fubexomufepa.weebly.com/uploads/1/3/4/8/134850999/xijex_jopizawize_rekuvixuruf_volokizezig.pdfIn PDF document text
    • https://vokefepafox.weebly.com/uploads/1/3/4/3/134333292/sodatekujupak-makugulokudepiz.pdfIn PDF document text
    • http://zimezobot.getenjoyment.net/dogadasodu.pdfIn PDF document text
    • https://kevanosum.weebly.com/uploads/1/3/0/9/130968994/novanevevuvezuligepe.pdfIn PDF document text
    • http://reduslim-sito.site/lirr_train_times_todayyd33v.pdfIn PDF document text
    • https://daseguvemorog.weebly.com/uploads/1/3/4/3/134357845/6de52566fe9624.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/pafiganovavi/cercanias_madrid_mapa.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/risk_control_matrix_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/lymphoma_contouring_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/23415876985.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/78655079203.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_off0000df16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF16 5528 bytes
SHA-256: 9a3ad88c8886274fbce9a2a6c7546bea60c9a7ea364bb9ccc1c1ac02bf471c30
font_01_sfnt_off0000f1f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1F4 10240 bytes
SHA-256: 4b326b6bc100fe4c76369a36e194bf8e88fdee0552c29676a3747aa968d87652