Malicious PDF — malware analysis report

Static analysis result for SHA-256 3260fb0eb032cc2a…

MALICIOUS

PDF

73.8 KB Created: 2021-03-15 08:13:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: cc5f796a6ef0f1b21a93aa3b6da4cd3e SHA-1: 56a6014a40c4b850c6b8c6b97013dc4b04277017 SHA-256: 3260fb0eb032cc2a6f9c5db70227e5142c05a52bf976c8c767ffe5742e8331b5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF was flagged by multiple heuristics as malicious, including a link farm on disposable hosting and a high ML classifier score. The embedded URLs point to domains that are likely part of a phishing or malware distribution scheme. The file's structure and numerous external links suggest it is designed to redirect users to malicious websites, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://baarspo.ru/award?keyword=functional+capacity+assessment+pdf PDF link annotation
    • http://azorocheat5.xyz/how_to_write_a_self_assessment_reflection_paperv2xzt.pdfIn PDF document text
    • http://pedagodogiko.getenjoyment.net/what_is_the_best_affordable_stick_vacuum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459036/normal_5ff62e1434baf.pdfIn PDF document text
    • http://dazolovegom.mygamesonline.org/mivatuvinunivurapa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5fd925e517185.pdfIn PDF document text
    • http://nopuvobetag.mygamesonline.org/how_to_override_ink_replacement_epson.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496165/normal_600a99c8c78b7.pdfIn PDF document text
    • http://pmaider.com/804515764520x8y6.pdfIn PDF document text
    • http://qupieasy.online/61177526085x2qfm.pdfIn PDF document text
    • http://art-practice.org/ganaxags6kmf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_6028edb6d9a0f.pdfIn PDF document text
    • http://sunugukumota.getenjoyment.net/72105690650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444882/normal_6014e74ba72a4.pdfIn PDF document text
    • http://nidewopovuwubo.mypressonline.com/what_is_a_family_assessment_tool.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479235/normal_6009fe0803c19.pdfIn PDF document text
    • http://mobile-media.moscow/dipexixekebunifewegir7ojqz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459467/normal_5fee041adfde4.pdfIn PDF document text
    • http://rasipafus.getenjoyment.net/bovovelegesuk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424010/normal_5fe4d9dbb7f71.pdfIn PDF document text
    • http://viniveba.mywebcommunity.org/how_to_use_a_nextbook_tablet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_6015ee898e2df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470553/normal_5ffba5d563860.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kozogasivufi.myartsonline.com/clarion_call_define.pdfIn PDF document text
    • http://badamowafe.onlinewebshop.net/xusimosivoruxu.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_off0000e2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D5 5260 bytes
SHA-256: c7b4ee8b8df5f6fcbfe45331ea3280ac88fdcfa83f69ea53b75889e811fc49f4
font_01_sfnt_off0000f4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BD 10384 bytes
SHA-256: f8f776be634c7c489e410d675bbce4d6eac54be4eb6662616053a2876abd0c59

Open this report in the interactive analyzer, or submit your own file for analysis.