Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e24c0f11a77e48b…

MALICIOUS

PDF

74.4 KB Created: 2021-02-19 07:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a181a637cdf5219f6d4539e3f0066c18 SHA-1: 38f831e7e39fb71d92944e9585cb9d2691e61b27 SHA-256: 3e24c0f11a77e48bbb436bd04d34d8d90c94046f88ade1244b69c3fd4450c6e4
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many of which point to PDF files hosted on various domains, suggesting a link farm or redirection mechanism. The document body, though heavily obfuscated, appears to contain search-like queries, further supporting the lure of a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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/aws?utm_term=how+long+does+it+take+to+charge+cobra+walkie+talkies PDF link annotation
    • http://greenbike.shop/kung_fu_panda_3_full_movie_download_300mbh1a7o.pdfIn PDF document text
    • https://soxapibojewaw.weebly.com/uploads/1/3/5/3/135345372/sulirimudekuzixej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486206/normal_5fc931c29ac2c.pdfIn PDF document text
    • http://glossywp.online/mekoniramedogodiruh0aqu.pdfIn PDF document text
    • https://fokinovev.weebly.com/uploads/1/3/0/7/130775288/67499a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413848/normal_5fcc7b7fe04bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443803/normal_5fef8fae677c1.pdfIn PDF document text
    • https://pebawozo.weebly.com/uploads/1/3/4/8/134865175/tasivatuba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372074/normal_5ff36d95200f5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://robatirewixiwol.rf.gd/human_anatomy_atlas_2017.pdfIn PDF document text
    • http://vudalulok.rf.gd/tolaluwitoxor.pdfIn PDF document text
    • http://buwufofu.epizy.com/xaxinurid.pdfIn PDF document text
    • http://jawuguv.epizy.com/52617582511.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_off0000e4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C4 5456 bytes
SHA-256: 40ab239037da5523a7989d1e785b7e0d7355cff9d4c3b864e28593f7c9f341c6
font_01_sfnt_off0000f75c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75C 10952 bytes
SHA-256: 72eb5debb58d0443df9f720f7f85149375a5dd191e17974898b775f95e95e610

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