Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e82af52feb8e36…

MALICIOUS

PDF

151.3 KB Created: 2021-01-11 13:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 20dff8d1182a05a544dc89fcdf520dc3 SHA-1: cd5a3bb2b2eab5fae4d3a8892d1314f94aa7cda4 SHA-256: 64e82af52feb8e366fd0fa8e16c35ea82c6be1ddbe684751efc08eefedb57dbd
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://ggtraff.ru/123?utm_term=human+impacts+in+african+savannas+are+mediated+by+plant+functional+traits In PDF document text
    • https://site-1180563.mozfiles.com/files/1180563/cultural_ecology_definition_geography.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478137/normal_5ffa3cbb73fd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416332/normal_5fa7aaa5c3adf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404123/normal_5fad9fed73c78.pdfIn PDF document text
    • https://site-1166701.mozfiles.com/files/1166701/funny_ringtones_for_ex_wife.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371023/normal_5fc9c89a75193.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/ronenitevodo/laxove.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/avg_pc_tuneup_2019_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/bible_stories_for_toddlers.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/90997464676.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001fdf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FDF9 5564 bytes
SHA-256: a57edb878d35494e9438d6180a05c6d3d1e48460b81b646800252e676947dbfb
font_01_sfnt_off000210cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x210CF 12948 bytes
SHA-256: d0541cb0c4aa7a2d7e1761336a03336295029a1e0e26dccec0808f85b27bf1b6
font_02_sfnt_off00023a16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23A16 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330

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