Malicious PDF — malware analysis report

Static analysis result for SHA-256 505be4e4aeb4fad2…

MALICIOUS

PDF

78.2 KB Created: 2021-01-27 23:49:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d96f19076d91c3ef62455df188c95a4f SHA-1: 8e59261befab52da2290edfd0ac0c45e61b2ee89 SHA-256: 505be4e4aeb4fad23f27451eaab6cd5df18fed5defb38ba14a5ac28d7e5186a1
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/123?utm_term=best+days+to+visit+disney+world+2015 PDF link annotation
    • https://fowemofuf.weebly.com/uploads/1/3/1/3/131379389/tefid.pdfIn PDF document text
    • https://xovotirepotu.weebly.com/uploads/1/3/1/4/131412955/lumelusi_tomuguzezumano_wilezawogilakef_sisurawixip.pdfIn PDF document text
    • https://sumejuloluguwir.weebly.com/uploads/1/3/5/3/135390827/79329.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407749/normal_6006260042829.pdfIn PDF document text
    • https://kunatelifarak.weebly.com/uploads/1/3/2/7/132712072/2828086.pdfIn PDF document text
    • https://tusidotug.weebly.com/uploads/1/3/4/4/134482214/supineliwa_sijuvemax_tosemi_pukoni.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/hfhfhe3/xaxipiliwezilurerakuxawun.pdfIn PDF document text
    • https://tewagolefavir.weebly.com/uploads/1/3/0/8/130814187/fosifobiruwi_mujetive_fojuzit_xowogirasok.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/sezewu/butterfly_keyboard_apk.pdfIn PDF document text
    • http://zisuvedo.rf.gd/ikea_kuwait_bed_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/whatsapp_for_nokia_lumia_610.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/boboiboy_galaxy_cards.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/bittitan_migrationwiz_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/geographic_information_system_software.pdfIn PDF document text
    • http://ramenejepom.rf.gd/75113435702.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_off0000f3dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DD 5572 bytes
SHA-256: 78249ea16bdae9d267586608791d4a368cf126e9080aef1edb9249461484fe5d
font_01_sfnt_off00010708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10708 10892 bytes
SHA-256: 6edc0e6dd148fb0206d192e64b8de3140b705c816dbf2d3cb89ae7003683ac37