Malicious PDF — malware analysis report

Static analysis result for SHA-256 497a636d4b8e8f2d…

MALICIOUS

PDF

77.1 KB Created: 2020-12-21 05:12:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3a875f7a0b45cb9b0bc3850a0928025e SHA-1: 116eff9148836c27857f75ddebe68400b94a3cb0 SHA-256: 497a636d4b8e8f2d7e6eed4b00c59a832e962dad45cae53931d49051462d99a6
96 Risk Score

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-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://traffnew.ru/strik?utm_term=ates+ve+su+12+kisilik PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4392869/normal_5fdbdfef84165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375356/normal_5fd15296bcfdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383792/normal_5f8be27864a5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380536/normal_5f8d2af22a7ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374371/normal_5fc55ab456004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383695/normal_5f8d5757b063e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445726/normal_5fc9461bb231c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdfea7fd6109863197839b6/t/5fe00e132629b066abdee6b2/1608519188155/naxenesigipoje.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/charest_reporting_email_address.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/bukalapak_mod_apk_unlimited_money.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_off0000da5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5D 4672 bytes
SHA-256: c94d3c93552e746544bbb9e2439baba5a2912e37ef134ac617862efc5e2255cb
font_01_sfnt_off0000ea68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA68 12476 bytes
SHA-256: 00cfa281b9ae6a940518e12c1bc11bd3126a8c35c8af7c74b68d40bf0614e147
font_02_sfnt_off00011123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11123 16164 bytes
SHA-256: 3f70697d8cfd0b9becff5adcad726f9ffedcc5d773cc6f7abbcc82b2f8034994