Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e905e0fee82f386…

MALICIOUS

PDF

84.8 KB Created: 2020-11-24 22:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: e01e895ede19c7cbb0322029f25f52d5 SHA-1: 42b1921512408d3c9575672982a313769a598599 SHA-256: 9e905e0fee82f386aa3570e9a881dcdc4b33d8619d5a3c13ff2c083f2c3de5cb
214 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Minecraft admin commands', suggesting a lure. The presence of multiple PDF links, including one pointing to a malicious redirector, indicates an attempt to lead the user to malicious content, likely for 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
  • 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.
  • 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.
  • 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/strik?utm_term=minecraft+admin+commands+fly In PDF document text
    • https://tugarekuxu.weebly.com/uploads/1/3/4/3/134307697/66889d.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/lasitoxajazug.pdfIn PDF document text
    • https://juderesovabivov.weebly.com/uploads/1/3/4/6/134680251/59cfc1.pdfIn PDF document text
    • https://bosebekepomij.weebly.com/uploads/1/3/4/8/134870535/4989003.pdfIn PDF document text
    • https://kipuxemoxux.weebly.com/uploads/1/3/4/6/134616309/2743022.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/suveseraluwefufuxo.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/pizivurapab/jixorutuzugugepuxowi.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/astm_a325_free.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/54847394958.pdfIn PDF document text
    • https://s3.amazonaws.com/tipakalif/medutojovoser.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/lifaruzovaruzi.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/edgenuity_student_login_san_diego_unified.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/kundli_pro_cnet.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000117d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x117D1 25652 bytes
SHA-256: 88efbf71406d9c02713b643956f419679c32883a94850f35895e067bbbcae633
font_00_sfnt_off0000dfd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD9 5272 bytes
SHA-256: 0cdc28578963ee0fa7fcd2c3869ee7ea43d354f00ab1f96939e8b400e4ea6ac1
font_01_sfnt_off0000f1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C7 11168 bytes
SHA-256: 8a717893478642909d0c4b48908cd1f82e01ca8ce67fee542b7fd43328769097

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