Malicious PDF — malware analysis report

Static analysis result for SHA-256 3480bb85e7e7ee9b…

MALICIOUS

PDF

57.6 KB Created: 2020-08-04 05:10:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e79abffab0899b03993efe0b1baf92cf SHA-1: 4988aeed30555ab7e4bcf01eb21c47fc10754f98 SHA-256: 3480bb85e7e7ee9b66e9cb22c1f24ac0611f0ff8c766b78c343d0be051d38e9a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it features a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content broadly. The ML classifier also strongly flagged this PDF as malicious. The embedded URL 'https://ttraff.ru/pify?keyword=jamiroquai+space+cowboy+bass+pdf' is the primary indicator of malicious intent, likely serving as a gateway to a malicious payload or phishing page.

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://ttraff.ru/pify?keyword=jamiroquai+space+cowboy+bass+pdf
    • http://files.chrissysfantasyfaces.com/uploads/1/3/1/4/131438389/d94acb139.pdf
    • http://files.madisonmedium.com/uploads/1/3/1/3/131382330/8639676.pdf
    • http://files.usclublax.com/uploads/1/3/1/6/131607103/4cd03102.pdf
    • https://cdn.shopify.com/s/files/1/0430/2723/4969/files/46545743935.pdf
    • https://cdn.shopify.com/s/files/1/0431/2665/3079/files/15921271769.pdf
    • https://cdn.shopify.com/s/files/1/0437/6081/2189/files/dugegizupopabex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdf
    • https://cdn.shopify.com/s/files/1/0431/5332/6241/files/pazosisod.pdf
    • https://cdn.shopify.com/s/files/1/0436/8770/6774/files/xapazobojezapamaku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jewaxepolirabosumasedud.pdf
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/32384018828.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/48574572956.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/gixamosigi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/xugojegedokalirelob.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/genetics_molecular_biology.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdf
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/22150094653.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e0d.bin
525bd82c6581b0d0f6bca84c1ea85608118fd316245f09383a5002e658782fe2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0D 5720 bytes
font_01_sfnt_off00009182.bin
b45eaee37fc7890962abc3ca39bc6cdbf9a0e3d993bf89bf24563b279e250961		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9182 16100 bytes
font_02_sfnt_off0000c360.bin
31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC360 16204 bytes

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