Malicious PDF — malware analysis report

Static analysis result for SHA-256 219957e66ce1ab6a…

MALICIOUS

PDF

76.9 KB Created: 2021-03-07 22:37:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e028d32d12a0d4248e2abc911f93314 SHA-1: 252707de2340ddb2717597cef109f8c8cdc8f746 SHA-256: 219957e66ce1ab6add33d0b1c802d8adcec15b29fe0398cc439783ab335fc239
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to the domain 'ponafet.ru', which is highly suspicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest an attempt to redirect the user to a malicious site for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/wix?keyword=tala+excesiva+de+arboles+efectos
    • https://cdn.sqhk.co/dokiladigana/LjijfG2/bluestacks_download_android.pdf
    • https://cdn-cms.f-static.net/uploads/4409796/normal_5fd8537de647e.pdf
    • https://cdn.sqhk.co/pumopijaku/79hh1hc/lapenubufegukixefejon.pdf
    • https://cdn.sqhk.co/lezubenewago/jee3zhh/27278944393.pdf
    • http://tiktokfrance.fun/how_to_reset_q_see_camerawvi2s.pdf
    • http://qqkaxes.xyz/junojofabewanunidavesuxojr0a.pdf
    • https://cdn.sqhk.co/vugomupuzisa/jb5janx/old_bollywood_songs_ringtones_zedge.pdf
    • http://robinmani.site/56989426878esot.pdf
    • https://cdn.sqhk.co/kiwikiza/nAjdhhO/jobifuj.pdf
    • https://cdn.sqhk.co/zimopiroxab/fLPLifV/36304039027.pdf
    • http://triple-doska6.club/39551816467vwz5q.pdf
    • https://static.s123-cdn-static.com/uploads/4450354/normal_5fe44b8a899a2.pdf
    • http://wow50.pro/72190985001ggfmp.pdf
    • https://cdn.sqhk.co/jatobeguji/cuhgghe/best_3_point_shooter_celtics.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e9ae0a9a-d66e-4a9c-b5a0-0d9fc6c42812/71472309185.pdf
    • https://uploads.strikinglycdn.com/files/ec637549-72bc-44cb-8017-672e36d7dfc8/vinitaxux.pdf
    • http://fusuxitizubuka.epizy.com/nazilasowudakezi.pdf
    • http://dafiwogi.rf.gd/chiari_11_malformation_radiology.pdf
    • http://bosefijov.epizy.com/drum_music_sheet_for_back_in_black.pdf
    • http://numebazo.rf.gd/52953282816.pdf
    • https://uploads.strikinglycdn.com/files/045576d3-c532-43e2-a12f-8f7ec10ceeb9/63251465754.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_off0000ed69.bin
689ef065bf9f9317bfe915a277d381f13a5830daea2570274e6d2f2d4f617fb3
pdf-font-stream PDF embedded font (sfnt) at offset 0xED69 5232 bytes
font_01_sfnt_off0000ff46.bin
bffbe0c82b532230ef5d1a7cf1310d380eaab221d237ccbc1ae616365330e421
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF46 11664 bytes