Malicious PDF — malware analysis report

Static analysis result for SHA-256 1496f3129d85975c…

MALICIOUS

PDF

69.5 KB Created: 2021-01-06 00:19:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 0695081e6bc41f1a9d0c09efe32653b6 SHA-1: db6c90ab352ee2c13862400b1b6d91eee86d50c0 SHA-256: 1496f3129d85975ca8bcbc340c82d08fac58ebd8221c65040dc37621b0d3d7f6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document body is heavily obfuscated, but the presence of the external URI is a key indicator of an attack pattern.

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://traffset.ru/wb?keyword=3d%20print%20soccer%20player PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419225/normal_5fe99447e4fdb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_5f974ed2c2b4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389797/normal_5fc0ff2a7bc35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383574/normal_5fae38a18c718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490539/normal_5fb36757d91f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5fd9c3d260166.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413968/normal_5ff028683c78d.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/f538265f-aad0-4144-a0d3-e4857a860df0/final_fantasy_x_boss_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/54361114831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39642502-6e45-4129-99c4-70f2b0b434f4/wezixozizunexokabiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/635801ff-6c2b-4aaf-9219-e09776b74798/10556692551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/299d2987-5113-420c-bc70-5d6acfd655aa/jiralapowexa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD507 5240 bytes
SHA-256: 67b163799454f445ee06192b89a4c1397a953b7e0b0ee142fd08dda8fdbebfe5
font_01_sfnt_off0000e6ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EC 10220 bytes
SHA-256: dd9f7fa798cb6832c68b89a6df7b01f84b71edb97a9a4390867db1824509142e