Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9d56ed083a1c987…

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 14:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3510fbb3f92aa27d0745cff03b94a71 SHA-1: b5c3fb5bfea0ad920043133e722d9d9d86d913f6 SHA-256: d9d56ed083a1c98754a8a3a05580efd65503d50cd4f0455d40f7009a37582a12
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to trick users into clicking it. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bad+boy+video+song++telugu', which is flagged as a malicious redirector. The PDF also hosts a large number of external PDF links, many pointing to Shopify, suggesting a link farm for SEO poisoning or traffic redirection.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bad+boy+video+song++telugu
    • http://bewawage.matthribar.com/uploads/1/3/2/7/132741615/didux.pdf
    • http://files.valenty.com/uploads/1/3/2/7/132712514/e1e97bc75c8c44.pdf
    • http://files.drycreekbaptistchurch.com/uploads/1/3/0/9/130969206/72abd5adb94.pdf
    • http://sokewid.valleyvignettestours.com/uploads/1/3/1/3/131379732/lerijisorem_vadukadejije.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/voxoxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/52370537475.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/mamaninuwixiwimikaga.pdf
    • https://cdn.shopify.com/s/files/1/0430/3310/0439/files/jetotidakajapoze.pdf
    • https://cdn.shopify.com/s/files/1/0430/1943/6185/files/59219746944.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5653/files/tasajetesotogatefutifipa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/29134511463.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/5353981096.pdf
    • https://cdn.shopify.com/s/files/1/0428/7063/6710/files/2651076421.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/suniradaratezu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/6088208762.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_off0000654e.bin
a8ad6eb6247385c63bbd0633844d9e7cae0c04a1d4d9cfacf00edaa0c40d25c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654E 5248 bytes
font_01_sfnt_off00007741.bin
16ee26a80f659f7e8e82cf925fad1c032e3bad9da6144adc87984a6308b8f59b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7741 10388 bytes

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