Malicious PDF — malware analysis report

Static analysis result for SHA-256 95465599211cd20f…

MALICIOUS

PDF

69.1 KB Created: 2020-11-25 18:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a339ff7432606546f0865c91eb22044b SHA-1: 96a3039766e4e64029baeef72dd8ccf63a249c5d SHA-256: 95465599211cd20f87949eb4629386e37fb7d463621885bc960ce9bd6f41c6ec
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, many of which are hosted on platforms like strikinglycdn.com and s3.amazonaws.com, suggesting a link farm or redirection strategy. One of the embedded URLs, 'https://traffine.ru/aws?utm_term=clash+of+clans+lite+apk++free', is particularly suspicious due to its query parameters suggesting a lure for game cheats. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffine.ru/aws?utm_term=clash+of+clans+lite+apk++free PDF link annotation
    • https://bazulerijodinib.weebly.com/uploads/1/3/1/8/131856415/57625fe0f1be4b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401692/normal_5fbaaed675169.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7538c254-badd-47aa-b6ef-8ee325c2b525/writing_equations_of_parallel_lines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1901a05a-571a-4b2a-a2d4-3f712ef36c40/barasedas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/709f7046-756d-42bb-b0da-11c2a25d63a5/97033919063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6a43b63-831b-4d22-9531-ca3b80a8bf2d/27931306280.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/free_fire_hacking_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/android_studio_installation_kali_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/sri_narasimha_kavacham_telugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b36f4686-2197-4551-a6c5-96cc8b22121d/severonuxu.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/2015026883.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/31730051455.pdfIn PDF document text
    • https://s3.amazonaws.com/waxejajinigafu/fakavokesudosavod.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_off0000d15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15B 5072 bytes
SHA-256: 23471d1e9f166370525e87dfb9ec8a6aaf8751d61f2a219f12852b5cd6173fd8
font_01_sfnt_off0000e298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE298 11296 bytes
SHA-256: cad9cb4a352433742f79f427d9edb3ace06e7066283fbbdba92d9327fe2ab40f

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