Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a009369e94fac52…

MALICIOUS

PDF

80.7 KB Created: 2021-04-14 21:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1c379d22b2813feba7791b0d5de00e35 SHA-1: 1b0a08262a922f7ad2ea089783155351a3e6d3ce SHA-256: 0a009369e94fac52b76812de5ea29828cdd0bb8111727795604e897931dcfa92
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/strik?utm_term=cu+boulder+transfer+app PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368760/normal_605d8dd108f45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369901/normal_5fcee68e72c98.pdfIn PDF document text
    • http://itclick.info/sylvia_plath_poems_bookhjx8s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415739/normal_602dcffc53e85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422918/normal_604384e2e9080.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480735/normal_6060fe18424d2.pdfIn PDF document text
    • http://onlinetyz.xyz/safivomalimikaxejemqkm9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426270/normal_606c92b0c7d8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483856/normal_6037232c2ab58.pdfIn PDF document text
    • http://kasiwewevono.iblogger.org/21449868411.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/tiduro/34010193739.pdfIn PDF document text
    • http://teposekif.epizy.com/88278826500.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/duxozanajedup.pdfIn PDF document text
    • http://rutuber.rf.gd/pictionary_cards_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/android_google_sign_in_error_code_10.pdfIn PDF document text
    • http://rubedirixadul.epizy.com/boduselelojigejiloz.pdfIn PDF document text
    • http://wirileso.epizy.com/piralazajen.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/dell_optiplex_790_drivers_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/22404028547.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/anime_live_wallpaper_for_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/bariatric_surgery_diet_guidelines.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE870 5080 bytes
SHA-256: e5dd5525ae2f5d95e808296bb8b47231ccc42c086b8adea0dac74ee53a0f18e2
font_01_sfnt_off0000f9b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B2 11028 bytes
SHA-256: 3fcc96ea86e4a9326ed915317c7345dc1a557db18d78a6fc8d5b910a6abefa0b
font_02_sfnt_off00011f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F92 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939

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