Malicious PDF — malware analysis report

Static analysis result for SHA-256 21e4602f7fc66e8d…

MALICIOUS

PDF

73.8 KB Created: 2021-02-16 11:59:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 89477ddf594962ea202e18b8b76b3e6b SHA-1: 57c229d9265bda942a4c7a9d40eae7bf0b774aab SHA-256: 21e4602f7fc66e8d291a4be4443be1f8c333b2ebeb1489caa691731a8ad54258
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://seumenha.ru/123?utm_term=how+many+fortnights+in+3+months PDF link annotation
    • http://successinyourlif.website/how_do_you_reset_a_lacrosse_atomic_clockmf82w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500667/normal_5fdf4e35e7e76.pdfIn PDF document text
    • https://cdn.sqhk.co/bizujonad/o0ShbDG/chocolate_recipe_without_coconut_oil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383681/normal_6011a76d84f50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444357/normal_601ed30b208f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459784/normal_6008eb4ccbee8.pdfIn PDF document text
    • http://bestrongbyg.com/skype_launcher_7._40u8wpj.pdfIn PDF document text
    • http://tdsevsvet.ru/85651571304ukx00.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/GOjdic0/bovedixuwowomiz.pdfIn PDF document text
    • http://teplotronic.ru/12215070314aqgjc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470385/normal_5febdb15ad5fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493201/normal_5fd0ba6373e58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454049/normal_5ffdebe3c2609.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374857/normal_5ff2136c96f87.pdfIn PDF document text
    • http://7lessons.fun/environmental_management_system_template_small_business49umq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482023/normal_602af45f541c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501794/normal_60007d35a2059.pdfIn PDF document text
    • http://komarovskii.xyz/classic_tower_defense_game_iosxp61k.pdfIn PDF document text
    • https://cdn.sqhk.co/wovupeni/ejhJjhU/taboxadukaf.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuvedije/ejhaiHV/riloku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381105/normal_6008836b33eb5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413977/normal_60270ebd78306.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369771/normal_60095f80b1425.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FA 5468 bytes
SHA-256: 5e77bee8276cb1944ec271e52ec04d5c6971ce2956b76c857378127f87388e2f
font_01_sfnt_off0000f684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF684 10316 bytes
SHA-256: a12699229400a89891b3a79a8a08392f2fd258bedd8b5c233ec7ccf53de10919

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