Malicious PDF — malware analysis report

Static analysis result for SHA-256 100fcb8076bb820c…

MALICIOUS

PDF

75.2 KB Created: 2021-03-02 09:55:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 49ce33c7b7c32f61187c79d4dc06e602 SHA-1: 1c4177f0487b16440a8a02f1decaebf633312740 SHA-256: 100fcb8076bb820c73565f3a5810b2d3c818e6ae102dbb38929015fe0cac7adb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/123?utm_term=one+of+us+is+lying+series+book+3 PDF link annotation
    • http://nemosixumeki.mypressonline.com/32914436634.pdfIn PDF document text
    • http://vodabezoli.iblogger.org/ruzufumagoko.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/58223255806.pdfIn PDF document text
    • http://loxapul.iblogger.org/nagotenetejamax.pdfIn PDF document text
    • https://fupigipefixoxom.weebly.com/uploads/1/3/1/3/131379213/vugolavumuwetodalafi.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/summer_waves_elite_pool_18_x_52_liner.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479925/normal_5fe5ad713f5ea.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/faputet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393346/normal_5fd2876cb6fe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478123/normal_602f0e9baa931.pdfIn PDF document text
    • https://kejobogufepemis.weebly.com/uploads/1/3/0/7/130775396/robixivogi_wuxavudi_depexoredovoke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481985/normal_6003b293884be.pdfIn PDF document text
    • http://jaralet.getenjoyment.net/64609927633.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/robot_coupe_r2_dice_blades.pdfIn PDF document text
    • https://fozaronu.weebly.com/uploads/1/3/5/3/135349809/fulivotituborob-ferefigop-gakalax-tobonopa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://domuromu.atwebpages.com/are_volvo_expensive_to_maintain.pdfIn PDF document text
    • http://tiluremuxaz.epizy.com/59159928850.pdfIn PDF document text
    • https://s3.amazonaws.com/luropiw/chicken_invaders_3_softonic.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_off0000ea52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA52 5220 bytes
SHA-256: 964243c254415379a7031fb466aac8714f4f27d54647a227525dea0eb3a9def9
font_01_sfnt_off0000fc3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3A 10380 bytes
SHA-256: 13508b75ccc3e5c0f717c6100756f92c9582931131bed6010f3ed6708e98252d