Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14e7e0e632112dc…

MALICIOUS

PDF

75.1 KB Created: 2020-11-11 01:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d7a2427373f0bc1e3f1b8060df983d4d SHA-1: 2846d12d437abfad83740ac6e9e5c8186b55794b SHA-256: b14e7e0e632112dceb0f8caa216086d1844642e68ddc2b11a79043939e6e724d
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/strik?keyword=alien+hominid+tyrone+s+unblocked+games PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405930/normal_5f93c49178471.pdfIn PDF document text
    • https://fevixivosetakub.weebly.com/uploads/1/3/2/6/132681861/4895481.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446380/normal_5faa00bb99f6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5f920b6f945b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425916/normal_5f9fcfb85d13f.pdfIn PDF document text
    • https://vokudaminovisuz.weebly.com/uploads/1/3/4/4/134495340/d2f5c9f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f878de9a46af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465402/normal_5fa3c49c50afe.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/wilugugo/63913414718.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/musuti.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/photoshop_paint_bucket_transparent.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/hot_dog_bush_2d.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD06 5648 bytes
SHA-256: 2c955a6819246eabe23acad56183b2f0d464d740b3b3517c3bd581e8d094e481
font_01_sfnt_off0000e013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE013 11068 bytes
SHA-256: 85db3663c12b0a6f537745d78869a9146ef92cd00ccf478c594e5920e59a0bd8
font_02_sfnt_off000105bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105BF 17652 bytes
SHA-256: 5c8ab430dd7006f3166b570127f4c8bcc561a1d556e063eb870961b412031580

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