Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0351569c8667158…

MALICIOUS

PDF

70.4 KB Created: 2020-08-14 05:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b914773c3da3c94486b308389303913f SHA-1: 1e98e03863620ae6f8f8d4cbb4101b11487febfd SHA-256: b0351569c86671587151db2bbaa816b3cabdd2fd3336ac61a99be0fa60b551dd
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a link farm, indicating a likely phishing or malware distribution attempt. The embedded URL 'https://ttraff.cc/pify?keyword=backless+lace+formal+dresses' is a primary indicator of malicious intent. The document body, though heavily obfuscated, contains this URL, reinforcing the attack pattern. The presence of numerous external PDF links suggests an attempt to obscure the ultimate destination or to leverage SEO techniques for distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=backless+lace+formal+dresses
    • http://bagipa.bmstamps.com/uploads/1/3/1/6/131606027/8049404.pdf
    • http://files.joveneslibres.org/uploads/1/3/1/8/131871433/sirop_jaxedijajipak.pdf
    • http://files.salvageddesigns.org/uploads/1/3/1/3/131380845/valewa_kiruwudugi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48975286879.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigazisamakolomomabixefox.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1447/files/timex_ironman_triathlon_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/anemias_resumo.pdf
    • https://cdn.shopify.com/s/files/1/0445/8423/9268/files/search_text_layer.pdf
    • https://cdn.shopify.com/s/files/1/0430/3339/5353/files/wujifutuvesuze.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/nudirufakexikuketan.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/detewoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/64507082231.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/14279547255.pdf
    • https://cdn.shopify.com/s/files/1/0439/2845/3288/files/sibug.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d77c.bin
295d64988e5548d5432e1d59d06e1a35352102385deab52b2a2387a005fa4850		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD77C 5280 bytes
font_01_sfnt_off0000e950.bin
e544404ad1622b05f5335c4ce6615e77126bfda7661ae18b9bd7a3b59365e0d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE950 10276 bytes

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