Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af8cb1d0ade4e04…

MALICIOUS

PDF

69.6 KB Created: 2020-11-14 11:15:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 17487226253be64490e5b50335f1242b SHA-1: 2d0f65dbe35ff51fc6dcc01994015a81ac3f84d6 SHA-256: 7af8cb1d0ade4e0414b55b52e50b12c362f554d84a63bb8b2fa42b90ac2c6721
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL, https://traffnew.ru/aws?utm_term=amman+video+song, which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a video song, consistent with phishing or social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/aws?utm_term=amman+video+song PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5fa28a8e797af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491723/normal_5fabdc53e5e1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_5f95b03cba6df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_5fa8b49c459a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_5f9959ce8188b.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/f33bdcf9-cf46-40f0-81b1-237365f20adb/95703988611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0830afbe-daaf-4289-a7c0-8ee800e0e2e1/98096363940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c536e88a-d187-417d-acbf-a6917087a238/46803433708.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/felaladonanizufetozugimet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d5d90b7-8abb-4c2d-bdfe-176d1a4de897/gadifitebekoluvexeri.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_off0000c5eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5EB 4772 bytes
SHA-256: 329400fa918fb745b7dfeca9e5e19312523e32b2de02b016d7670cc6aab70300
font_01_sfnt_off0000d600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD600 11364 bytes
SHA-256: 1487275155cb130b2612071c5d12bbef2b2ada12db02489590c56ca48a643171
font_02_sfnt_off0000fc35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC35 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34