Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f5e0d808041f8d…

MALICIOUS

PDF

63.5 KB Created: 2021-02-14 19:12:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a39333664c016a2f482231a202dfd556 SHA-1: f46a82fcc93ea8ab5da2f58cd601ce086a18ff8b SHA-256: c7f5e0d808041f8db17e418232941830238098e79c2531c519255321ae7ae668
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/wix?keyword=pdf+superman+logo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4496146/normal_5fdc703512836.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496378/normal_6007c2c52b002.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/pibicGz/attitude_baddie_captions_for_instagram.pdfIn PDF document text
    • https://cdn.sqhk.co/segexiji/0orgfji/rugby_nations_19_game_tips.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366022/normal_5fe5aa0b7e858.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408706/normal_601749557f747.pdfIn PDF document text
    • https://rugexivik.weebly.com/uploads/1/3/1/0/131070765/64568b60d22270f.pdfIn PDF document text
    • http://wizomokupelew.iblogger.org/2015_chevy_tahoe_ltz_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_6025f2bad8fea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382972/normal_6003cf73b4ad1.pdfIn PDF document text
    • https://pudisemibupar.weebly.com/uploads/1/3/4/0/134096773/3558162.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477649/normal_5feeba2b1c1d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403565/normal_5fc628e5f1f6b.pdfIn PDF document text
    • http://help-verification.com/filetype_cyber_securityb0ja5.pdfIn PDF document text
    • http://islemleriniz.org/jojajire7pb26.pdfIn PDF document text
    • https://bupuvebawa.weebly.com/uploads/1/3/2/7/132740405/acc9538c04518.pdfIn PDF document text
    • https://fojakodi.weebly.com/uploads/1/3/1/3/131379163/d1286f649613b7.pdfIn PDF document text
    • https://cdn.sqhk.co/zafowavo/ZjfhhWA/xabozosasosovidufe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pukevekoba.rf.gd/64959233186.pdfIn PDF document text
    • http://zowiseli.epizy.com/kalorabidawixevapa.pdfIn PDF document text
    • http://vamivesuger.epizy.com/introduce_new_staff_email_template.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_off0000be08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE08 5360 bytes
SHA-256: ccf306fc707799a4d8665827f75fa83ef436d945ad64158bff62150ad64367e7
font_01_sfnt_off0000d033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD033 9680 bytes
SHA-256: e633cc7bba05b8a5029e510e4e9c261e1a628d98ee0f11142a732ab9abff8187