Malicious PDF — malware analysis report

Static analysis result for SHA-256 479aafc3a28d2e24…

MALICIOUS

PDF

76.9 KB Created: 2021-05-14 15:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 11d29f89e381ae8aded1d53459d809d5 SHA-1: d6fbe07ead90a930e5070b793d77f8136e443661 SHA-256: 479aafc3a28d2e2417460090d1f2d8ad09024dcb0260c0e07497e6a2cb527c2b
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 0.9993

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://xezojetit.ru/strik?utm_term=is+30+minutes+of+strength+training+enough PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373782/normal_5ff97f4331c74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455659/normal_604bc6949fb3e.pdfIn PDF document text
    • http://tehnopolis.org/dumawubutaiqgkh.pdfIn PDF document text
    • http://srakan.space/98997997379xf6my.pdfIn PDF document text
    • http://fimewot.xyz/95478285753pm6b.pdfIn PDF document text
    • http://graatorama.space/network__computer_systems_administrator_jobs5zpea.pdfIn PDF document text
    • http://grizhoff.ru/baxedufokapodujexinipqzzmo.pdfIn PDF document text
    • http://microbladingeyebrowsdallastx.com/gospel_in_the_stars_bookbclgg.pdfIn PDF document text
    • http://erogan-columbia.site/list_starbucks_menu_philippines_frappuccinoz26s7.pdfIn PDF document text
    • http://geekcods.com/how_to_include_an_autistic_child_in_the_classroomlnntl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383923/normal_605ee3747ed32.pdfIn PDF document text
    • http://vykupavto54.ru/febomuperivejadinonabopzu6x0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380209/normal_60073824bd6c0.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/fibesezati/81133236870.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/sazujebofawiwuwujedat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/293a9496-294b-4cde-be3c-618bd3d4fa6f/24788895681.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/the_economist_23_june_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/11080250668.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/convert_to_musicxml_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e117fa8-a860-4c31-8b3f-67092883e70b/mawaxazu.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/pulogorewijuti.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/char-broil_3-burner_natural_gas_or_liquid_propane_gas_grill_with_side_burner.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/happy_birthday_wishes_for_mom_video.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_off0000f076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF076 5392 bytes
SHA-256: 5283517570cdf6fa8a82ea9039c063f10f3e2ba2a33136af1da4ead6916cd267
font_01_sfnt_off000102a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A3 10404 bytes
SHA-256: f35130c3aa29f804098fb4e039f93532c40771aa62e810ae5d028c34d8198064

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