Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d888d7297f622d7…

MALICIOUS

PDF

90.3 KB Created: 2021-03-19 23:58:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c1271a8bf28f9bd230a4446762a6adf SHA-1: bc4d07dba924c3d82ace2ad9fe0ee0ea542808a4 SHA-256: 7d888d7297f622d70c5234e2c1a8d8012730fbfe1fd646178bd248bcac999e77
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 to serve a second-stage payload. The document body, though heavily obfuscated, contains keywords related to 'award' and 'departamento del caqueta', suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/award?keyword=departamento+del+caqueta+pdf
    • https://static.s123-cdn-static.com/uploads/4379030/normal_5fec14683644f.pdf
    • https://cdn-cms.f-static.net/uploads/4365659/normal_601744b07f955.pdf
    • https://cdn-cms.f-static.net/uploads/4380070/normal_601c974a26893.pdf
    • http://vedice.ru/82332667769clrz8.pdf
    • https://cdn-cms.f-static.net/uploads/4409425/normal_6027db0c2ab03.pdf
    • https://cdn-cms.f-static.net/uploads/4403808/normal_6011efd365187.pdf
    • https://static.s123-cdn-static.com/uploads/4494868/normal_5fc955458e896.pdf
    • http://sy0n.icu/primeros_auxilios_curso_gratispiwym.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3a03b12f-64b1-4b45-84fd-bbbe24b3158b/sony_vegas_pro_9_crack_keygen_free_download.pdf
    • https://uploads.strikinglycdn.com/files/9ee1fc6c-b3c1-4e42-910d-d4bfe00a09f3/what_is_the_purpose_of_1987_philippine_constitution.pdf
    • https://uploads.strikinglycdn.com/files/f30cae96-34de-4bed-8d8d-a0af1d1a211c/15934634452.pdf
    • https://uploads.strikinglycdn.com/files/004a1078-4ad1-4730-b3d2-0aa7518b9ef7/what_is_the_story_sarah_plain_and_tall_about.pdf
    • https://uploads.strikinglycdn.com/files/9a4fe8df-8270-43af-823f-7ae393fa7de1/kavodujixoxojafafemiwuga.pdf
    • https://uploads.strikinglycdn.com/files/56274f69-86c4-4653-81ce-446ad9d35cb2/interview_question_and_answer_guide.pdf
    • https://uploads.strikinglycdn.com/files/7a5edc35-062e-4651-9694-133e6d70b09c/famag.pdf
    • https://uploads.strikinglycdn.com/files/8731f83f-dc15-41cd-8b1b-aa7bb0ccea00/honda_xrm_110_engine_parts_diagram.pdf
    • https://uploads.strikinglycdn.com/files/41b89194-28d8-40fa-b135-3b4ca60ae88d/retexedidegowug.pdf
    • https://uploads.strikinglycdn.com/files/54aaca97-30d7-4621-9104-7a521c782c29/bimaf.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e1f.bin
7e6a746a2da4b574a3e2122a16548938d3677424449d69cdb63ae52ff097a5ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1F 5248 bytes
font_01_sfnt_off00012fe7.bin
c6976e5d7c20169bd4210d6a9339e45ee50efa8250114727e45b2aa6b7baac3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x12FE7 13564 bytes