Malicious PDF — malware analysis report

Static analysis result for SHA-256 f181d69edc5e9908…

MALICIOUS

PDF

90.1 KB Created: 2021-03-12 02:35:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f1b68aa8135de6c0988e7b6d1e3900b SHA-1: 7cac3574d75c254e468acd00136ff6b74a010049 SHA-256: f181d69edc5e99087244912dfb3c997fe91e3a2f1741cbc935053204d4bf2b8f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'Childhood's End' and the authoring application, suggesting a lure to a malicious site.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://xezojetit.ru/aws?utm_term=childhood%2527s+end+book+vs+show
    • https://sebigazawipad.weebly.com/uploads/1/3/0/8/130814057/aaebd1.pdf
    • http://itchia.space/abide_3_verb_forms1cw4f.pdf
    • https://cdn-cms.f-static.net/uploads/4481420/normal_6029656125d67.pdf
    • https://muzuxagofonokow.weebly.com/uploads/1/3/1/4/131406885/7829b4324c4ba7.pdf
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/7bb8f2.pdf
    • http://majusenise.sportsontheweb.net/tuck_everlasting_book_vs_movie.pdf
    • https://ziwuwozapa.weebly.com/uploads/1/3/4/5/134517717/nivijanirugogewub.pdf
    • https://static.s123-cdn-static.com/uploads/4464530/normal_5fc9cce31c91f.pdf
    • http://fakts.design/stickman_hook_pcvzr1b.pdf
    • http://pirewarekow.mywebcommunity.org/76135437688.pdf
    • https://zujuwedidikaf.weebly.com/uploads/1/3/4/3/134375258/nedulafereze-tefakafile.pdf
    • http://pagefufobixew.22web.org/54920748506.pdf
    • http://xifadezuzurap.medianewsonline.com/what_is_basic_structure_of_c_program.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wewepov.rf.gd/bash_script_argument_string_spaces.pdf
    • https://s3.amazonaws.com/sutawowirosuvuv/53065603644.pdf
    • http://bumurulepowele.myartsonline.com/cummins_diesel_generator_troubleshooting_guide.pdf
    • https://s3.amazonaws.com/ganubifirigevi/real_flight_simulator_for_android.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012429.bin
2b060450c2d79394fd0100956446db571ec2a3f9e674d86ae24b1964111e2201		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12429 4904 bytes
font_01_sfnt_off000134e7.bin
25f34d4de75b9621b8b637f718519733f7e7991abc399bb78b3a8dc4cd4633f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x134E7 11400 bytes

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