Malicious PDF — malware analysis report

Static analysis result for SHA-256 c385a99827d5eeb7…

MALICIOUS

PDF

41.0 KB Created: 2020-11-02 14:41:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e0ba9a429c53f155817407638dd19c0f SHA-1: d670539e454d2e631c087633c1439aafbff85704 SHA-256: c385a99827d5eeb707dfc2eca49f57c47fda129ada51188a56265468fd0fbfc6
134 Risk Score
Tags
free-cdn-ebook-manual-lure

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, contains the same URL and appears to be a lure for 'nba 2k14 gameplay mods'. The SE_PASSWORD_ARCHIVE_LURE heuristic indicates that the document likely instructs the user to decrypt a password-protected archive, a common tactic to bypass security filters. No scripts were extracted, but the presence of a malicious URL and the archive lure strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/strik?keyword=nba+2k14+gameplay+mods In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f873d338495f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368982/normal_5f9a70881db20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370273/normal_5f88002d60d79.pdfIn PDF document text
    • https://lujadogube.weebly.com/uploads/1/3/4/5/134522393/vupifawefedebefod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379846/normal_5f9115ff54686.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_5f96dc124d4c0.pdfIn PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/xogazuvazoxo-nufonopisidu-sadisinajudux-wagabilezamuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375070/normal_5f897d0d31284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374366/normal_5f9271165d914.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3b28e2cf-8273-4019-9b63-a463530d7cf8/90274717103.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c0578bc-d015-4842-bf6c-75292876e2eb/dimoxawevakabilaxibax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/0969/1807/files/12559216502.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eaed94e-5eb7-406c-bbfe-34662e3c968e/poxexowanomofedazorabubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/9603/1391/files/21255980093.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84c99b87-d3fd-4606-b0e7-1f155677d5ec/5133865084.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5313 5284 bytes
SHA-256: 9fa8656eaa03902a4fafbc62dd7581d2b448800f760c9301e6a9ce68fccf50a8
font_01_sfnt_off00006526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6526 10468 bytes
SHA-256: 65188315ef1f670c40d7bc675cdc8295cf5ce2b148e7f8f03850dbf76d860b2f
font_02_sfnt_off000088ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88EE 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

Open this report in the interactive analyzer, or submit your own file for analysis.