Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa08b0fd4d69737…

MALICIOUS

PDF

258.2 KB Created: 2020-12-23 15:23:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: cad7991f5d838081ac7f54d679c4586f SHA-1: b1bd36cbd5a8579a4fc8c8058043e35f1fd4d900 SHA-256: 1fa08b0fd4d6973719c04d54c8a2fb9250e13c0516e5dff8ea35b51667b6f50c
162 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, appears to contain a lure related to a movie title, combined with urgency language, suggesting a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9781

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ggtraff.ru/aws?utm_term=eminem+aka+full+movie In PDF document text
    • https://cdn-cms.f-static.net/uploads/4418972/normal_5fa36af51156c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_5f9085b21717b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403822/normal_5fb7ffa045ad5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450634/normal_5fd2d0d2e9428.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476285/normal_5fc85e27d3ec7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477916/normal_5fdeacfe419a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369332/normal_5f9265148115d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382405/normal_5fddaec8dd2a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412909/normal_5fb6dd05b0d03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389603/normal_5fd0ea714ed7c.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/sefabe/vonobimugekevigijifir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7617797a-b181-4ad5-9612-174522899af5/fojuda.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/vowulajomotepenokefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae56e75e-adc1-4761-b69d-d35ad4a80a45/tuck_everlasting_test_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/graduate_survival_guide_dave_ramsey.pdfIn PDF document text
    • https://s3.amazonaws.com/farezelof/fact_sheet_template_microsoft_word.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/61103541509.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00039b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39B7E 4720 bytes
SHA-256: 53585dfbab6d8f73c538326223a751a4b7be7e245e5e3a7252ab114caa2ba69f
font_01_sfnt_off0003ab86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AB86 3328 bytes
SHA-256: cca213118e2f81e90b15b1345e6941074bb81cceffed01eacc2a5e3b865d6157
font_02_sfnt_off0003b6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B6E8 13560 bytes
SHA-256: 20a7dfa8d2e31f24d885b58f23e09593432ddeed9a9ae667236477e8a6de924d
font_03_sfnt_off0003e321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E321 16520 bytes
SHA-256: d6db3b579985764b448897d28110af80e7e24fe3f5f63ca3c24d31c9b23dafd5

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