Malicious PDF — malware analysis report

Static analysis result for SHA-256 7354fd77baec71a2…

MALICIOUS

PDF

247.6 KB Created: 2021-01-12 00:47:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e0f8adb9303984f4faccb2d0049e9b22 SHA-1: 96ae195ee232364d86541f44eabac7d0942dd45c SHA-256: 7354fd77baec71a215b8df070d42c9291af68a49e1f7c9e2ea06752ff2d96d21
136 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with the heuristic 'SE_LOLBIN_RUN_COMMAND' indicating suspicious command execution patterns within the document text. The presence of multiple embedded URLs, including one pointing to 'traffking.ru', suggests an attempt to redirect the user to a malicious site for further exploitation or phishing. The document body, though heavily obfuscated, contains references to URLs that are also listed as IOCs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://traffking.ru/aws?utm_term=99+names+of+allah+images PDF link annotation
    • https://site-1173140.mozfiles.com/files/1173140/43616085639.pdfIn PDF document text
    • https://cdn.sqhk.co/nevawanipo/8gdcbhh/hideo_kojima_games_ranked.pdfIn PDF document text
    • https://gedikorewugeg.weebly.com/uploads/1/3/0/7/130775309/e1db6df.pdfIn PDF document text
    • https://site-1168528.mozfiles.com/files/1168528/aliexpress_curly_bob_wigs.pdfIn PDF document text
    • https://cdn.sqhk.co/wafixagi/cibigMU/mebobalajerugodimemot.pdfIn macro / runtime command snippet
    • https://site-1171969.mozfiles.com/files/1171969/lyrid_meteor_shower_2020_pennsylvania.pdfIn macro / runtime command snippet
    • https://nuzokubipodopu.weebly.com/uploads/1/3/4/7/134732356/batimagozerujek.pdfIn PDF document text
    • https://site-1166701.mozfiles.com/files/1166701/american_express_paybill.pdfIn PDF document text
    • https://site-1172568.mozfiles.com/files/1172568/mimpi_teman_hamil_artinya_apa.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/luropi/67122599076.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/tratados_internacionales_en_materia_ambiental.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/pufuluka.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/gaddi_tu_manga_de_mp3.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/pamesaveginemokef.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/australian_visitor_visa_subclass_600.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/kigafigo.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
    • https://s3.amazonaws.com/dusubonifu/pufulIn macro / runtime command snippet
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00038b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x38B70 5144 bytes
SHA-256: 34a1ab017b255dafedc68ce7c52c5ed421a41622f0e6e6547e34a92d69acb1b8
font_01_sfnt_off00039cd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39CD1 16984 bytes
SHA-256: c9e6f44aee49d9ec6b1b6edf55ae2fa746d8fcd6db7bc445526cc5424a9fe859

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