Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec82fa7c7b500d7b…

MALICIOUS

PDF

75.8 KB Created: 2021-03-14 20:38:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c663cf2cee936fa5cb07e0ee612a284 SHA-1: bd508e55898affa334f06f02e02d2b7710630c9c SHA-256: ec82fa7c7b500d7b99afa4e5fbb07de95e4891db8522a9c611b7b5bf44949d9a
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://nipisod.ru/wix?keyword=go+fund+me+titles+for+medical', which is likely a phishing lure. The document body, though heavily obfuscated, contains text related to 'Go fund me titles for medical', reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://nipisod.ru/wix?keyword=go+fund+me+titles+for+medical
    • http://misstourist.info/pasogamafasivozexabuk9yxd.pdf
    • https://cdn.sqhk.co/wabogojo/iiGhggl/lepimuvisiriwofoku.pdf
    • http://subikizivuwen.22web.org/kreg_bandsaw_fence_manual.pdf
    • https://cdn.sqhk.co/tozegatopaxu/8RTxmHV/soliruzuletu.pdf
    • http://andyhong.blog/39181040241z5h2n.pdf
    • http://edarudost.online/jidinidwzwag.pdf
    • http://ziwegiwe.iblogger.org/arap_sabunu_ak_forml.pdf
    • https://cdn.sqhk.co/kekelivig/idhdEDC/jomibolimijowufuto.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://luwulifinuneti.epizy.com/bahubali_movie_tamilrockers._net.pdf
    • https://5926284e-b61c-4ed0-95e5-27b9feedd2c3.filesusr.com/ugd/50c35f_e64143f907a743fba1f12d846e57bfaa.pdf?index=true
    • https://s3.amazonaws.com/tapexiw/99538770733.pdf
    • https://uploads.strikinglycdn.com/files/6d883d2e-abc7-4b9b-9a09-5e5c5f367b36/22971126149.pdf
    • https://s3.amazonaws.com/dobesogum/ziwuwo.pdf
    • https://s3.amazonaws.com/leributafa/gobasowes.pdf
    • https://uploads.strikinglycdn.com/files/87dba02e-4903-4e9f-acb2-b3dff3db8169/tuzugadijanorenafoniziv.pdf
    • http://duwujedop.rf.gd/cuisinart_coffee_maker_dcc_3200_manual.pdf
    • https://uploads.strikinglycdn.com/files/ec2d5f3d-8b31-4a19-92f0-af54ddf34ee8/wedixuderumasotek.pdf
    • https://535a9070-e28a-464b-adc5-c02ad08be00b.filesusr.com/ugd/9df9d6_a092ffdb42ca4782b9816b9cec9956f3.pdf?index=true
    • https://s3.amazonaws.com/fizufapu/47521497530.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd5b.bin
43393f66ea8339b4cd39a246b45b7f9a519f3b5ecd18ac5cd36b97b9c720d953
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5B 5080 bytes
font_01_sfnt_off0000ee83.bin
ef3df6db1a879d2c536b596f3bf09d158d00323633d131219722256678df13be
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE83 11132 bytes
font_02_sfnt_off00011420.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x11420 4324 bytes