Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f360bb9196b585…

MALICIOUS

PDF

68.6 KB Created: 2020-12-21 17:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d26246d2189abd107f95aaffeaf860d9 SHA-1: cd1a7d6c5626a0a8416e54cedd1108671fc12f07 SHA-256: e1f360bb9196b585861ef75b3f0bd035d8baf71c6bcaf4ef9ffc9402b6155af0
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link, specifically pointing to 'traffmen.ru' with a query related to game cheats. This suggests the document is designed as a phishing lure to redirect users to potentially malicious content or further stages of an attack. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/wb?keyword=flame%20hero%20unlimited%20money%20and%20gems%20download In PDF document text
    • https://kukajuma.weebly.com/uploads/1/3/4/3/134380089/kajidogesosov.pdfIn PDF document text
    • https://nakigere.weebly.com/uploads/1/3/4/6/134608851/xidisabikibefi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464852/normal_5fad952a2e639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5fbf56378e92e.pdfIn PDF document text
    • https://vasinurevesodux.weebly.com/uploads/1/3/4/6/134605286/7653308.pdfIn PDF document text
    • https://womegirig.weebly.com/uploads/1/3/4/5/134506381/432115.pdfIn PDF document text
    • https://zilexewutefak.weebly.com/uploads/1/3/4/6/134608169/8306304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411491/normal_5f96f579a372f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc56b7140f1034a5cc72ee0/t/5fcbc2191880ce05e8529a2a/1607189017661/dosili.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bebbcd1e280355d37542/t/5fc17028cb3e0f577185faf1/1606512680629/mupafofekewalizosavojiga.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc728d4c43b171198891597/t/5fced7867c363627419e9ddc/1607391110733/mopitoxulewedunujub.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE49 4620 bytes
SHA-256: 1fec5fabe9650c3624d80719e97736a04ce3adcf311a0a07c000ec374b14ecf9
font_01_sfnt_off0000ce6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6C 5388 bytes
SHA-256: 2d88a69a256cc9ffa45428803a084a1a70ab3e321b60ed6c333d3b0e2036898b
font_02_sfnt_off0000e0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AC 10584 bytes
SHA-256: 7290ee6c032dd27a422b72c6438886f9b68c7fe2076ad2f6421f3c23e57ed851

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