Malicious PDF — malware analysis report

Static analysis result for SHA-256 9efcb4f4368d2514…

MALICIOUS

PDF

108.9 KB Created: 2021-02-21 09:15:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 380a9b5cf1ace176f2fb8ba85bf9f15f SHA-1: ad5ddb3f576f0651113a3e87f994b7af959b9a69 SHA-256: 9efcb4f4368d2514ceaa5968583c7445e824817acc99e3ebd9d14cc050736b32
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-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://crophysi.ru/strik?utm_term=peace+like+a+river+book+quotes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4394068/normal_5fe854af9c3b3.pdfIn PDF document text
    • http://dombitarf.ru/31517570351uh9np.pdfIn PDF document text
    • http://videohost.space/gnomes_garden_similar_gamesppuhf.pdfIn PDF document text
    • http://oneitshop.info/tizafetatepobajigonukudidghy7.pdfIn PDF document text
    • http://blankid.ru/principales_problemas_de_salud_publica_en_mexicopqg53.pdfIn PDF document text
    • http://saudiautoinsurance.com/xesizebujanogurivezev9lybd.pdfIn PDF document text
    • http://remont-kholodilnikov.website/338754645545hrbs.pdfIn PDF document text
    • http://my-favshope.online/bademevujonigudukoporunzihk7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471234/normal_5ff9a4dbee29e.pdfIn PDF document text
    • http://prod-fruit.space/367842567978ttss.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367299/normal_5fdf73b6eefa6.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/jasadavebaga/witevon.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/11107950186.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/hobbywing_esc_setup_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/rerinago/houston_rockets_rumors_bleacher_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/tinogizogul.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_off00015f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F76 3724 bytes
SHA-256: be6516afd8a6623a0d3d4f8d5dd23cfdea535ec9528e6113fed9de1e14f62a7a
font_01_sfnt_off00016ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CCC 5184 bytes
SHA-256: 47b3a3ae96dcc50646a7b787ee11e79a36f22829b7c4c281008d43403e074494
font_02_sfnt_off00017e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17E8A 12068 bytes
SHA-256: 70d78ecfd72fc514c5e636781919d826a412299ef7c7ba52aecd9bbf93e31844