Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c047b64280814c…

MALICIOUS

PDF

67.3 KB Created: 2020-12-27 14:44:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 19d7de9d21f2227b1fd0cbfdd2ae1af3 SHA-1: 9c6eb63e96e895569ba239308503f2dbc5137766 SHA-256: 66c047b64280814cee1410bb1c5660bab3dafb56cafbda389e937e21dea33df5
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically 'https://traffmen.ru/strik?utm_term=lighthouse+church+school+santa+monica'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to a school, aligning with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/strik?utm_term=lighthouse+church+school+santa+monica In PDF document text
    • https://morurotefat.weebly.com/uploads/1/3/4/3/134317018/sevirojus.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/ijgeHdy/53572115114.pdfIn PDF document text
    • https://duparumiwope.weebly.com/uploads/1/3/4/7/134707207/7726008.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/TRskGiJ/pusoberesaxokoxogumijax.pdfIn PDF document text
    • https://xirozakopep.weebly.com/uploads/1/3/4/7/134719339/2291632.pdfIn PDF document text
    • https://vijugurapun.weebly.com/uploads/1/3/0/8/130814303/a4ba13644c37a94.pdfIn PDF document text
    • https://cdn.sqhk.co/lixozimiz/jgcuibU/6877836975.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/fewunadupop/poliwusulifotojemizipusun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9ea50fc-9e91-48fb-8354-cec002a17b56/10497658535.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/kogipupubepuxixokugigol.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/archer_the_warrior_mod_apk_unlimited_money.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_off0000c82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82E 5156 bytes
SHA-256: f6735e0c352ed07d22633d87d7ac9c093796cc15978f50949e7b49df7b95c002
font_01_sfnt_off0000d994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD994 11920 bytes
SHA-256: 363ffef5d718b111e053699d3467c2a7470daf8f4d9b050038daad5be41a3198