Malicious PDF — malware analysis report

Static analysis result for SHA-256 f03731a5d714b33d…

MALICIOUS

PDF

41.3 KB Created: 2020-11-02 16:51:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: aecd85ced6db721b5e52f0c80b890099 SHA-1: ea8d9b349f3102976668aab46b7497548bac686d SHA-256: f03731a5d714b33d20883c3ffed10e8c9e95b81923c0922a15a9c0926cfba6d3
94 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, indicating an attempt to lure the user to a compromised site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded link and the nature of the PDF content suggest it's part of a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://gettraff.ru/strik?keyword=arizona+renaissance+festival+2020+hours In PDF document text
    • https://mokogexikimowo.weebly.com/uploads/1/3/4/3/134321985/wiwev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5f9047567792b.pdfIn PDF document text
    • https://nilanifek.weebly.com/uploads/1/3/4/4/134466172/3820950.pdfIn PDF document text
    • https://xeseboda.weebly.com/uploads/1/3/4/3/134323550/6121439.pdfIn PDF document text
    • https://gokipeko.weebly.com/uploads/1/3/4/3/134351508/maxufixofajofukumoba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373008/normal_5f90d2cdec550.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/vosizemofoloruw_rulologobizikak_kezowiputunaka.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/lanorolowu/31625969160.pdfIn PDF document text
    • https://s3.amazonaws.com/vinivuxo/joponelisejobisabelo.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/math_for_machine_learning_richard_han_download.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/wavelet_analysis_matlab.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/roots_and_suffixes_worksheets.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_off0000602d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602D 5340 bytes
SHA-256: 33b382b355db1a41ad762f9d2b55bee29dba33b5bdc8412fd8873bf0b6e8803d
font_01_sfnt_off00007260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7260 11324 bytes
SHA-256: ede3d186622e0a52826dd79822237ced91149165a2ae20d914648ac0568ea9eb

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