Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cac77efb4f93e4a…

MALICIOUS

PDF

60.2 KB Created: 2020-11-16 23:11:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7bfdef899eca60a7a063f081df23ac59 SHA-1: b9cc09267e95ae769e766ecb3762a1fabdd7472d SHA-256: 0cac77efb4f93e4a9c042d33a6ad446b8099cf2da16aa72eb4a880502764c378
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafficel.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'Indira soundarajan novels online reading'. No scripts were extracted, but the presence of embedded URLs and the overall detection profile strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/strik?utm_term=indira+soundarajan+novels+online+reading PDF link annotation
    • https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/zokas_gokazetakopaxi.pdfIn PDF document text
    • https://fategebedabeno.weebly.com/uploads/1/3/4/7/134718848/sokurinom.pdfIn PDF document text
    • https://jezitazosebizag.weebly.com/uploads/1/3/4/7/134700096/xutef_dikak_kobinakafowumi_tivaguxulep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385202/normal_5fa2fc1ebb09e.pdfIn PDF document text
    • https://fetarulezi.weebly.com/uploads/1/3/4/4/134487317/putatexad-dosogare.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/837046.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443624/normal_5fa6e91671335.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403679/normal_5fab876083f8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f8748949a345.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/02a8a4be-f37e-480c-8201-78a6df496946/cursors.io_hack_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15aab12b-52ad-4587-aadf-8b4b9f7594b2/mighty_beanz_star_wars.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_off0000ad44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD44 5068 bytes
SHA-256: 536b3437c8227a5f7cc9f9327f7d8e76c2ffb150bbb6b239103f852faa9c8b48
font_01_sfnt_off0000be98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE98 10980 bytes
SHA-256: cdd40265729a98974f9e1416995997792dade4ba501fad0335dd2e60571ba4b9