Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd86775669f45edf…

MALICIOUS

PDF

74.1 KB Created: 2021-02-27 18:06:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 61ba55e4d1dde1740421574a9119d61e SHA-1: 6b9d0fdba708098e627e475105b8b7eabd40d2dc SHA-256: fd86775669f45edf609c2c1dc838176ef80c70ec06f1e3d4439282723658819e
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/123?utm_term=the+prince+and+me+full+movie+online+free+no+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476133/normal_602fb2267fa7d.pdfIn PDF document text
    • https://wuliwedifa.weebly.com/uploads/1/3/4/7/134753749/59d25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465123/normal_5feb7dcb10f59.pdfIn PDF document text
    • http://makululi.iblogger.org/komupalalujetakizam.pdfIn PDF document text
    • https://wiwovadale.weebly.com/uploads/1/3/5/3/135322143/faforuduri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490132/normal_601407690a0fd.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/iA94xic/27177722605.pdfIn PDF document text
    • https://cdn.sqhk.co/gixekoji/FifdHig/finutoxugetuwol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vutagefen.epizy.com/zafupe.pdfIn PDF document text
    • http://jikudifotiwobij.epizy.com/20174897189.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/photo_collage_template_pages.pdfIn PDF document text
    • http://bulekixor.epizy.com/12294493127.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/watch_pride_and_prejudice_movie_2005_online_for_free_putlockers.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/chromium_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/95316637672.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE248 5316 bytes
SHA-256: 4ab117b660086bdc97c2aadf0b41139ceb19cc832f832024c636a3b72160a3ff
font_01_sfnt_off0000f448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF448 11504 bytes
SHA-256: a4b4df4597fdebfedc79b42f5b2305cdff505961ac26460f59bacdac71a2ac95

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