Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5e8b3109c953ca…

MALICIOUS

PDF

73.2 KB Created: 2021-01-18 13:48:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 41026aa16118e6f715a2d28a16043496 SHA-1: 86b17465b98cec7a7dc3feff91d10d431c09f7b9 SHA-256: 7d5e8b3109c953ca37aad54afec340e4264c2ae4f1fdf6cb6e4ff592f4f74c62
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs 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, suggests a lure related to a game or application.

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://trafficel.ru/123?utm_term=malefic+truth+dragon+legacy+of+the+duelist PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393193/normal_5fd73566a3228.pdfIn PDF document text
    • https://livaruzurakit.weebly.com/uploads/1/3/4/4/134432061/wogidinaxanegemo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489411/normal_5fe4f3a4a7546.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393197/normal_5ff6c5a6755de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490515/normal_5fbe76a288819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459921/normal_5fe76bd200a7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476288/normal_5fb7e3d23fc8d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468536/normal_5feb079945e5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379971/normal_5f8ce3ff72c02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479460/normal_5fdfb8c26ea99.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/dobesogum/btd_battles_hacked_client.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/aiims_bhubaneswar_recruitment_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/budaya_maritim_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/lasijenunutilugub.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/nulajidapew.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B5 5392 bytes
SHA-256: 4b4c1e7ab54d961fe3a87875884e71bed598d54e08029fbbbe397b6056717ebd
font_01_sfnt_off0000f319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF319 10664 bytes
SHA-256: 85c554aa26d38aaaa97b91ab93666cc3de04b71ced4732194cbb1963b24bb450