Malicious PDF — malware analysis report

Static analysis result for SHA-256 852a0bc5c6074fcd…

MALICIOUS

PDF

83.1 KB Created: 2021-02-22 16:12:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 25a5c36ae91daeb641ac13d4e2f48119 SHA-1: 60d99bb6f477f12c04449920bbb4c288570b651a SHA-256: 852a0bc5c6074fcd01730141da911250fd19693406f6f410de8d0da6a5e6bb56
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text suggesting a lure related to a "short film script in hindi". An embedded URI points to a suspicious domain, likely intended to host a malicious payload or phishing content.

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://bologen.ru/strik?utm_term=short+film+script+in+hindi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463006/normal_602428847eac5.pdfIn PDF document text
    • http://nobirejajatit.iblogger.org/91350845192.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417414/normal_600f9450aca68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488806/normal_6033ba3528d75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489422/normal_5fe5f5e0a6f07.pdfIn PDF document text
    • https://cdn.sqhk.co/marixefe/S0UYzRk/ponufu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446921/normal_5fdd7b53cecbd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449614/normal_5fd2e3bcd22f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366956/normal_602ad11508cfb.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/baxadelefofibuz/89891725819.pdfIn PDF document text
    • http://mitufesidu.epizy.com/5th_grade_math_problems_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/36558334703.pdfIn PDF document text
    • http://tidomag.epizy.com/grim_dawn_2h_shaman_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/63199774573.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/ffxiv_armorer_quest_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kigavanus/helsinki_city_break_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/bhiwandi_weather_report_today.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF42 5288 bytes
SHA-256: 46e475fa228d7246cd7ccafeb6cac4afb4a13a3aede1647ed30e5fe5de5ab2c3
font_01_sfnt_off0001011d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1011D 12480 bytes
SHA-256: 5352c82caced37c1a8041b46338783b8c55c9b5535e2e029d9c517883c6e638c
font_02_sfnt_off00012935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12935 16388 bytes
SHA-256: 534e44c921e8acb9c8e993207df297c85ca6c672af4c6174c05b3ca24a170572

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