Malicious PDF — malware analysis report

Static analysis result for SHA-256 e43a0f684dcaf7ad…

MALICIOUS

PDF

42.2 KB Created: 2020-10-02 00:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ae1e81fd8df5aff99c47b45befdcee31 SHA-1: 58a25a1ad3d5aab7d1a81294ddd2e71cf72fb8b1 SHA-256: e43a0f684dcaf7ad93ffa4bd3396e998a06f17f7fbae1f1e2d6ce68f4035d65e
154 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a known malicious redirector, disguised with a lure related to 'how to dive in gta 5'. The document body and heuristics indicate a link farm strategy, likely to distribute further malicious content or phishing pages. No scripts were extracted, but the presence of multiple external links suggests a downloader or redirector pattern.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/strik?keyword=how+to+dive+in+gta+5 In PDF document text
    • http://files.rmrrsha.com/uploads/1/3/1/4/131453045/8327aa3ea.pdfIn PDF document text
    • http://files.blackbullfrosterley.com/uploads/1/3/1/6/131637209/f5afe.pdfIn PDF document text
    • http://files.millersaddlesandsilver.com/uploads/1/3/0/7/130740196/pazumediwinavolod.pdfIn PDF document text
    • http://keveke.ninjagoats.org/uploads/1/3/1/6/131606875/kipugunezexo.pdfIn PDF document text
    • http://duraxotu.bathbombspetersburg.com/uploads/1/3/2/8/132814241/3503237.pdfIn PDF document text
    • http://files.clairebearblogs.com/uploads/1/3/1/3/131381036/4709835.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/da13d4ac-b59c-404c-acc2-30a968acf964/suzed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4d9eaab-f3ff-41ba-a01c-63765f3b0010/pamotuxusanudekiretaboweb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90fb96ce-6ca1-4ba4-8039-7bb81fafb8b8/82669965302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7352/8223/files/36533321459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6203/7153/files/martin_meadows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4095/4773/files/93133176908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0442/8949/files/mibifezit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3503/3757/files/ticketmaster_vs_stubhub_resale.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_off0000674b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674B 4924 bytes
SHA-256: ab8ab230344baa489c44132d9db32822e06aa79d02ed9ad57b78621ccc8fe03f
font_01_sfnt_off00007840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7840 10500 bytes
SHA-256: 7513debd484558e59f8f8fb09df6f208befdb85dbe57ec603a1fb146b1bd0759

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