Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c2566fdfce9225f…

MALICIOUS

PDF

65.0 KB Created: 2020-12-17 18:05:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7f3cc300cd8bbe1bf1569fd00da53146 SHA-1: a92c6d5967066f4d0777bdd6208725f0280511e7 SHA-256: 8c2566fdfce9225f7e349510cbb7755c48436efff231d5b4020ade938bc2f20a
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 0.9995

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://traffnew.ru/aws?utm_term=converse+plataforma+gris+claro PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369901/normal_5f8ac6007a8e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418369/normal_5fcd63ef8b5fe.pdfIn PDF document text
    • https://xavidupi.weebly.com/uploads/1/3/4/7/134723560/tulexibedulimem-lugaruxutoxobaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/cc6acf7c-8737-4228-a555-4a769914fea6/63045118024.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/sosisosopivon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30eb611f6a4198493c815/t/5fcc48bb260a660a6bcf986c/1607223484166/download_boom_boom_football_mod_apk_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/87383455685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43701a4c-d450-4887-b9aa-60225e3fa386/13529509527.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d90a7255-7c96-4f0e-84cf-43ab8d8b8d4b/dawamilesepel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7506eb6e-b032-471c-afd2-18588dd8df94/stardew_valley_introductions_27_28.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_off0000b1d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1D9 5208 bytes
SHA-256: b6ccb308efd5c5a0f99267624254c0c85dacd311b7ee9ba944a2ff358c2145af
font_01_sfnt_off0000c381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC381 12460 bytes
SHA-256: 01e2fd0144fcc89484958a87e5619dadb33390380a7ca4499389446193516e5d
font_02_sfnt_off0000e95b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95B 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2