Malicious PDF — malware analysis report

Static analysis result for SHA-256 0007c0243563ee71…

MALICIOUS

PDF

89.3 KB Created: 2021-03-26 10:21:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 872a39ba84852e4b31cdfa9d63eeb501 SHA-1: 8f07dc20c411af9c422c4f551a61c1fd99f20119 SHA-256: 0007c0243563ee7173633da76c8e812a889b4345f4e7b48bfc3233e9a5d64860
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external links, with one prominent URL leading to a domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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 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://resalured.ru/award?keyword=beginner+guitar+lesson+book+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480755/normal_5fc859bacc161.pdfIn PDF document text
    • http://mofirixubutibi.getenjoyment.net/jesuwetojolobite.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485156/normal_5feb3909cd98e.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/dgdLwgc/puwevaduxibazuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446287/normal_5fe7b67106558.pdfIn PDF document text
    • http://alcozerox.com/juruzudujivaxwshjy.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/33924097777.pdfIn PDF document text
    • http://miromawetibikew.mywebcommunity.org/does_youtube_pay_for_live_streaming.pdfIn PDF document text
    • https://cdn.sqhk.co/zovigobut/17X5HEk/hattricks_tampa_happy_hour.pdfIn PDF document text
    • http://tavegumata.sportsontheweb.net/mopifotejabug.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/cnjaNij/lighthouse_church_glen_burnie_md.pdfIn PDF document text
    • http://garanibukumom.scienceontheweb.net/gilejama.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470399/normal_5fd68ca374250.pdfIn PDF document text
    • https://cdn.sqhk.co/lerotakisisa/iighhge/nikah_contract_uk.pdfIn PDF document text
    • http://eu-study.ru/vegab4ud0t.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/tuxalowafokuvo/canon_mp190_printer_scanner_software.pdfIn PDF document text
    • http://jawikaginixuxuz.rf.gd/mayrhofen_ski_report.pdfIn PDF document text
    • http://gokegufokefewev.rf.gd/1681860398.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/84802109118.pdfIn PDF document text
    • http://wewepov.rf.gd/48148227512.pdfIn PDF document text
    • http://fipinajamidab.epizy.com/kixodegumupa.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/bootstrap_3._3._7_grid_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/lista_de_verbos_irregulares_conjugados_en_frances.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001094f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094F 5464 bytes
SHA-256: c3924a4897f19d3a23fbac75769aa5ec6a447333fb7d6ea24ce6de3f14a808a0
font_01_sfnt_off00011bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF3 11280 bytes
SHA-256: 2e68e380aa98ecaa13ef3c587913169529fb635c9c59c9678ca11af8eabdc721
font_02_sfnt_off0001429b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1429B 16140 bytes
SHA-256: 1ffca1ef16be5e2ec436e77f9211a88ad3199dc781cb76600401cc2e2c7dce6d

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