Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce0bd4cd39286008…

MALICIOUS

PDF

72.0 KB Created: 2021-02-04 06:47:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 821bdafd5af51506066d63755b79516a SHA-1: a11c2d82f2add8a38d99435f23ca2299cee9a424 SHA-256: ce0bd4cd39286008e68326a1d6c3bf23922ab2fff14f5261887a36137f4d9710
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains a large number of external links, many pointing to PDF files, suggesting a link farm or redirection mechanism. One prominent URL, 'https://baarspo.ru/aws?utm_term=bodyguard+hollywood+hd+movie', is likely the primary lure, directing users to a potentially malicious site.

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
  • 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=bodyguard+hollywood+hd+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413362/normal_6013ca9bf0f16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384030/normal_5fdf56fc1aa72.pdfIn PDF document text
    • https://damowovevibip.weebly.com/uploads/1/3/0/9/130969764/95c1513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426687/normal_6015935d62ac1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_5fe9b1bc5d037.pdfIn PDF document text
    • https://jokinurelebuvet.weebly.com/uploads/1/3/1/8/131856462/wiromilarux.pdfIn PDF document text
    • https://gixisisopovi.weebly.com/uploads/1/3/4/7/134713576/dibarinage-fajatigutawige-valokovusuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486045/normal_5fe33e20f2b26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422906/normal_6017c6bbab78f.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/vososasoxumete/zaganexogifudepegejo.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/jnu_admission_online_form_2018-_19.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/tiweravib.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/wafosagija.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/jafezelikapibad.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_off0000dcf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF0 5364 bytes
SHA-256: e275da68b083708278ab1bdb80659ebc2e97450cbe6cb63fa0a9a9ac7c002183
font_01_sfnt_off0000ef28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF28 10584 bytes
SHA-256: 5759dd9f4211ac57bfe36783095abd7ecc6cbdb4e50fb0dc3a2d5ae73614e798

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