Malicious PDF — malware analysis report

Static analysis result for SHA-256 f023c7d78d662f34…

MALICIOUS

PDF

67.6 KB Created: 2020-12-17 11:08:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: ca4d2bd5d1a8f7c017ec745ee3c95ed4 SHA-1: 3910a1c32e21860479a3ea1f8c0dee2016a3d9b2 SHA-256: f023c7d78d662f34c29536bedf4e90da6df0d4834c12f1b1b785f24f11ce3d3d
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the presence of a malicious URL is a high-priority indicator for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/123?utm_term=biblical+meaning+of+the+number+2040 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5f9897ecefc3b.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/vekodupiwarobi/7_split_merge_file.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6749988c99b6d37cd8350/t/5fcb550eb495bd20281fa9af/1607161103505/lunimumeborikuduro.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/bangla_album_video_song_full_hd.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4ed85147b1480429a5b5/1606373087055/jixolamap.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3046cc14dfd36feff55ec/t/5fc57fa23c02f22b9dc7ef3c/1606778787411/56044413343.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/jenojulesux.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf662feaf37e3b6493f06a/1606379055771/83454514825.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/55315783223.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/2615247612.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b716a3bf4b14abca1fb7/t/5fcdc33474a40730fbb8e3a1/1607320375278/tiles_tracker_amazon.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_off0000c754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC754 5668 bytes
SHA-256: 083e27bfdcf39b2a6e27613dfdb57e25534e9cef4a4c948cf02c142358592ce7
font_01_sfnt_off0000da7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7F 10960 bytes
SHA-256: 3379229b22d552ce6e4243cb2ab4393d682b9f5d84d52da857c147dff5e9a1df

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