Malicious PDF — malware analysis report

Static analysis result for SHA-256 52f4a119dedd8bb7…

MALICIOUS

PDF

59.2 KB Created: 2020-12-11 20:40:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8ea0f00e6d5d4248c0f7a9c20a9b3695 SHA-1: 6c60b67aba610ddabe59dbd097247d2d5fe9382f SHA-256: 52f4a119dedd8bb73e4eb2b6fdb09208ac5a005d27043c3d26c514e6f94e3944
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded external URI pointing to 'traffnew.ru', which is highly suspicious. Although no scripts were extracted, the presence of a malicious URL and the overall detection strongly suggest a phishing attempt designed to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/strik?utm_term=ropa+interior+para+mujer+guatemala PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464330/normal_5fb934ac687be.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/tesotiwapax/mopar_2019_touch_up_paint_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/41627235740.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/emulator_android_9._0.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce211c8eda244dc4aba070/t/5fd07b9448ae4d121802b295/1607498645476/36617901317.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4cc83239b0722914a2f70/t/5fc82454217b3604edd0f9e2/1606952021024/waxosevulelakuzofoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/681c28f7-f5fd-4b92-81b7-a6b2e3495c3e/4th_grade_math_study_guides_common_core.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/26126501909.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d014ec917750a3f94da0/t/5fc6fe97b7521d608a3a6d3b/1606876823690/chocolate_cake_cooking_temperature.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/wujixiloragivenegofi.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/54805925821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aff3461b-dbb0-4ed7-9e1b-b7a78d82fda0/turtle_beach_ear_force_px4_how_to_co.pdfIn PDF document text
    • https://wa.link/cs7r64BekleidungIn 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_off0000abef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABEF 5044 bytes
SHA-256: d22107dd7fdc5a4a14d4192597a2592079ef4b0596cfe42944acb3de41d80997
font_01_sfnt_off0000bd0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD0B 10832 bytes
SHA-256: 22133cf87d72ce575eb86116d682732e1aa4afeffce5022cb35372932ac0b040