Malicious PDF — malware analysis report

Static analysis result for SHA-256 d180e278f26b4e3b…

MALICIOUS

PDF

44.7 KB Created: 2020-10-01 03:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 653a52d35a8d4bb9b4bab989445384d2 SHA-1: b5d6cf547d5f82db5cfa0c544b407a1ff374ef92 SHA-256: d180e278f26b4e3b765383658a3d547a7ac6231cc2fe3e5ae7866419b925d941
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier and contains numerous embedded links. One of these links, https://gettraff.ru/strik?keyword=articles+all+rules+pdf, points to known malicious redirector infrastructure. The document appears to be part of a link farm or SEO manipulation scheme, designed to drive traffic to malicious sites. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly indicate a phishing or redirection attack.

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=articles+all+rules+pdf In PDF document text
    • https://site-1037848.mozfiles.com/files/1037848/49070514999.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/tubifoliz.pdfIn PDF document text
    • https://site-1036918.mozfiles.com/files/1036918/83609748870.pdfIn PDF document text
    • https://site-1037274.mozfiles.com/files/1037274/1931135093.pdfIn PDF document text
    • http://gubokopo.alexmerrin.com/uploads/1/3/2/7/132710589/rodivasi-boroma-botovo.pdfIn PDF document text
    • http://files.volkmarkunerth.com/uploads/1/3/2/7/132740250/bulofosugal_zogizekoz_rulakamafi_mewanuneb.pdfIn PDF document text
    • http://files.makeupalchemist.com/uploads/1/3/1/4/131438113/xofowigewi.pdfIn PDF document text
    • http://files.twinsyogamom.com/uploads/1/3/1/6/131636929/rurisi.pdfIn PDF document text
    • http://safavem.cushingparish.com/uploads/1/3/1/4/131483468/dee38a91cf174.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/google_maps_ajax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7633/7318/files/99904354537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magizokoluredofet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0710/files/sixaxis_pair_tool_apk_latest_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2487/1335/files/mamiya_rz67_vs_rz67_pro_ii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0894/1467/files/manslaughter_sentence_guidelines.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_off000070fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70FC 5140 bytes
SHA-256: d531b458e9f55be00178e47eba2ebe7399c945b2537e53911de91233c9909f2d
font_01_sfnt_off0000828b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828B 10408 bytes
SHA-256: 2b3e9f3d50f5f782d4516a0c0f1773b401afd918fff68dff9e43b8c8b3d697be

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