Malicious PDF — malware analysis report

Static analysis result for SHA-256 301f6f5bc6baecf1…

MALICIOUS

PDF

58.0 KB Created: 2020-08-15 05:29:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da7fdf1f87b587cd6d5a249ac1e76a68 SHA-1: e0d728c88460e9aee532089a09cf3fa92c50241e SHA-256: 301f6f5bc6baecf10778e789dc58478e241f98ebdb040ce75afbc70c84ea6b5d
128 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, disguised as an invoice or payment lure. The embedded URL `https://ttraff.ru/pify?keyword=pa+attorney+registration+form` is a known malicious redirector. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=pa+attorney+registration+form
    • http://files.dayspringtoday.com/uploads/1/3/1/4/131453206/rejenuxurubaf-veruxaraj.pdf
    • http://lalej.spiritofaustralia2.com/uploads/1/3/0/7/130739113/6054361.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/80640676624.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/51353150234.pdf
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/sukepebadisoxibetunuwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6009/2315/files/hak_ulayat_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5811/files/vezoluzamemiza.pdf
    • https://cdn.shopify.com/s/files/1/0434/0767/1447/files/61315854037.pdf
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/totenodapebo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/31502266017.pdf
    • https://cdn.shopify.com/s/files/1/0432/4042/3587/files/gujapojoromipufamer.pdf
    • https://cdn.shopify.com/s/files/1/0435/8841/9741/files/14939068156.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/30459025870.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_off0000984f.bin
061e9da9118238d196aab726011d69c446be8eeeffecc9c950f5a7ee0468b9cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x984F 4944 bytes
font_01_sfnt_off0000a90a.bin
b633bbda16c1ae389178e4121d7f7c46f15614ebd469cc8d6a49fa667e628746		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA90A 10536 bytes
font_02_sfnt_off0000cd0b.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0B 4324 bytes

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