Malicious PDF — malware analysis report

Static analysis result for SHA-256 c29269f5ef9e4727…

MALICIOUS

PDF

63.6 KB Created: 2021-01-30 02:13:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bb1ca1034647c20eb123512cee114942 SHA-1: de9692e729f0d060ecdf88982df373660347423d SHA-256: c29269f5ef9e47279ba9470ea40aa819987cc172f7606fbf3213f89be949d200
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://jacksth.ru/123?utm_term=oscar+peterson+transcriptions+pdf+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418746/normal_5fee06b6936cc.pdfIn PDF document text
    • https://tigoxugijiwubaz.weebly.com/uploads/1/3/4/3/134315710/9126393.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487647/normal_5fed025a953a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408460/normal_5fc61fb31a583.pdfIn PDF document text
    • https://cdn.sqhk.co/rovifatira/MibgddM/okay_goodbye_in_spanish.pdfIn PDF document text
    • http://morasufas.iblogger.org/50332321095.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409819/normal_5fe4484f16698.pdfIn PDF document text
    • http://popibiku.22web.org/adobe_audition_free.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/megodipewukitoj/logic_pro_x_trap_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/zowolikatotika.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/converse_shoes_sizing_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/rofobenovufefu.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/display_costing_sheet_in_sap.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/58696509389.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/add_admob_banner_to_android_app.pdfIn PDF document text
    • http://wisunomimat.epizy.com/caesar_1_game_pc.pdfIn PDF document text
    • http://bajipodi.epizy.com/glasses_usa_contact_information.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/sesokekiripadipibesos.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_off0000bc0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC0B 5144 bytes
SHA-256: bccc959a00d0a069389d007e5258b94f504caf2a794bd079101100cb27685f06
font_01_sfnt_off0000cd9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD9A 10480 bytes
SHA-256: bc31ffccabb0ede27a94dff3c503d738d9eeadeb751b4c3b3b151bb231344d49