Malicious PDF — malware analysis report

Static analysis result for SHA-256 c600803657c9346c…

MALICIOUS

PDF

101.9 KB Created: 2021-03-24 15:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9a2a70196c7f2f6a465b037de437bb12 SHA-1: b5c679065f99539775eb953e41c81fb0bcd29120 SHA-256: c600803657c9346c3787f91edfc66e0570c211f89dbd3f85f6f4c947599ddc15
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 0.9997

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://vilenefex.ru/wix?keyword=trade+terms+quiz+1.78+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5fd67579b19c1.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/dxjbohi/cute_snapchat_logo_blue.pdfIn PDF document text
    • http://matteset-spon.space/cervical_spinal_stenosis_icd_10frd7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413456/normal_601a338a7549c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451021/normal_60526623a0859.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391636/normal_6026d65c950b7.pdfIn PDF document text
    • https://cdn.sqhk.co/nalomuxe/4hEjf5x/bofikaw.pdfIn PDF document text
    • http://acgmgroup.ru/florida_real_estate_broker_license_course_onlinemf8tx.pdfIn PDF document text
    • https://cdn.sqhk.co/godezixibufo/igibvjf/dipabezalaxuxomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408174/normal_603d166542af0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476925/normal_5fdb02783e258.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5434d45e-e22d-468f-a216-023623517caa/pofixegivab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f6b6429-6915-4e5f-8c8a-780b2facac31/17638579522.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001496d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1496D 2828 bytes
SHA-256: a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8
font_01_sfnt_off00015367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15367 5516 bytes
SHA-256: db40317fb968bf9abf2e23fbf0a038064e5e7af96f9e2e2eefa4b6c1578d9306
font_02_sfnt_off0001662d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1662D 10084 bytes
SHA-256: a807cf35fcb87bc06efc3f22fe7af66177194af7f2e8c4b3cf60d6cb8173a79e