Malicious PDF — malware analysis report

Static analysis result for SHA-256 87b9802a04a294fe…

MALICIOUS

PDF

65.8 KB Created: 2021-03-02 20:54:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 72dc09d6279297db67e2a8bd8cf8521e SHA-1: 653fead07625309abc58a057e3e31bea02dd8582 SHA-256: 87b9802a04a294fe968411db449463c2c05ed4cdb71b067c80a86d1f23d26f4d
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://fokemale.ru/wix?keyword=algebra+2+glencoe+answer+key PDF link annotation
    • https://dakikizubebara.weebly.com/uploads/1/3/4/8/134889455/fimibarolerafigo.pdfIn PDF document text
    • https://cdn.sqhk.co/lusoxepero/jrniejg/id_passport_photo_maker_studio_app_download.pdfIn PDF document text
    • https://wifaborasumekig.weebly.com/uploads/1/3/2/6/132695644/vegegi.pdfIn PDF document text
    • https://cdn.sqhk.co/togodawexu/Dyijjay/puppy_wallpaper_free_download_for_mobile.pdfIn PDF document text
    • http://cccckkkkkdd.space/81579291975hjy3f.pdfIn PDF document text
    • https://varemajog.weebly.com/uploads/1/3/4/5/134585454/0395930ef8.pdfIn PDF document text
    • https://cdn.sqhk.co/juzogimuju/nyhcgdG/commander_genius_switch.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/l8tjj4K/60826559934.pdfIn PDF document text
    • https://zupelewelasilag.weebly.com/uploads/1/3/4/5/134594614/ba6f30144.pdfIn PDF document text
    • https://nuxaluvuwij.weebly.com/uploads/1/3/5/9/135997537/lobaloges_zuzoriwemuniwi_ninesetukadoba.pdfIn PDF document text
    • https://wivutukezed.weebly.com/uploads/1/3/1/4/131438473/98c9a2cb31e2850.pdfIn PDF document text
    • http://hydra.moscow/mevisafekojiwadaxetup9dt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459055/normal_5ffc8b8e8923f.pdfIn PDF document text
    • http://bigtittybella.com/building_information_modeling_bim_extraction_software_market0wyqx.pdfIn PDF document text
    • https://waperimawomexav.weebly.com/uploads/1/3/4/7/134733778/9978996.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/ehdih5v/bethesda_pinball_pc.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/pasawe/zapivumimun.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_off0000c6c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6C6 5484 bytes
SHA-256: 59e1ffe66927e3788c4d834d6ecb295cb763df85188630665e036ca4aa398e28
font_01_sfnt_off0000d999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD999 9596 bytes
SHA-256: f3a8b4eaf77a537a37df25448be1268207cc1a1908966783d656d94d0e44fde0