Malicious PDF — malware analysis report

Static analysis result for SHA-256 e05ec063a691cf8b…

MALICIOUS

PDF

61.1 KB Created: 2021-03-28 00:58:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: fe137a8560c71a611eece77b9d5f7417 SHA-1: 37c27b8917f8d90ca24f1b444a97f519bef0f7c7 SHA-256: e05ec063a691cf8b99cc5290883d712c37d656b26dd5708a2a95b160ec8571f8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, identified as a link farm, with one primary malicious URL pointing to 'nipisod.ru'. This suggests the document's purpose is to redirect users to potentially harmful sites. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nipisod.ru/award?keyword=kabbalah+egipcia+pdf PDF link annotation
    • https://cdn.sqhk.co/zebenane/dwij6ic/action_rpg_pc_games_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_602aa5523feff.pdfIn PDF document text
    • https://cdn.sqhk.co/lozukoxokir/g11nidV/11263262279.pdfIn PDF document text
    • https://cdn.sqhk.co/dewufidabo/emcagqv/sadovekigadi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369158/normal_5fdc49f744aa2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393521/normal_5fe5facd3e7cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/23219281-cfc4-407c-9e35-2b428eae5663/99859156245.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/neil_gaiman_dc_comics_crossword.pdfIn PDF document text
    • https://033a7475-7ccb-45c1-8f1e-38fd320d48d0.filesusr.com/ugd/03a576_180716e7db0041b893bb5482472678c8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f24378d-3c45-4691-95c5-c898ef6a9428/how_is_arrow_spine_measured.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c793d731-b9a6-4583-ad49-0a56d66ab499/99277972669.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/is_deskjet_2132_wireless.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b2ee363-9cd2-4834-864f-b8d93e5184fc/tavawogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cc7888d-4e94-4ff6-9d74-82b853ba2b32/buboloxakusafabixim.pdfIn PDF document text
    • https://da6a6a96-7907-4aac-bfe3-592928b14ca9.filesusr.com/ugd/39e844_f26f00e716bd458ca9bf4d015a5440e6.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA81 5252 bytes
SHA-256: 4726db63f32b39812b88fd387dfbde60f7a137000f1d9a5e5ba43d92a5e7f595

Open this report in the interactive analyzer, or submit your own file for analysis.