Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d998bdded0f04b…

MALICIOUS

PDF

40.1 KB Created: 2020-08-06 07:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63c02f1c3a8828c447d6d3ea25ccfddd SHA-1: 9ec79ffab4dd9641971f0fd532d4d113a88335b5 SHA-256: b0d998bdded0f04bf21f814bc6955daabbe3f53e4df4f0f8fabfb939bc5befd1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains embedded links that point to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to a malicious site under the guise of 'self improvement quotes'. The presence of numerous other PDF links, many hosted on cdn.shopify.com, indicates a link farm strategy, likely for SEO poisoning or to obscure the ultimate destination.

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.com/wb?keyword=self%20improvement%20quotes%20pdf
    • http://files.whispersisterstudio.com/uploads/1/3/1/4/131482866/loweromokozejur.pdf
    • http://files.laurasiangleaner.com/uploads/1/3/2/3/132303010/9317052.pdf
    • http://files.britishrecordshoparchive.org/uploads/1/3/1/3/131398129/2798595.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6817/files/lorusubilufawev.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/29731128194.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3062/files/kayla_itsines_bikini_body.pdf
    • https://cdn.shopify.com/s/files/1/0438/2969/0528/files/javaripeg.pdf
    • https://cdn.shopify.com/s/files/1/0435/8527/4024/files/miwesanukaxadewutolapiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/rumujoverida.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2347/files/tazojetojirarinip.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/madugususifowamajununuga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34996744553.pdf
    • https://cdn.shopify.com/s/files/1/0431/5466/9729/files/pemagojepa.pdf
    • https://cdn.shopify.com/s/files/1/0427/5961/8716/files/84610727062.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_off00005f1d.bin
e1ed9ead848098dfac871ca53b5b1c4c098ca7a343bc9bc4334d1de10d7d7ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1D 5264 bytes
font_01_sfnt_off000070f7.bin
052a7e3a8c63460cad2eb150ff65983aadaca9593fc1d26920e06f7356f2c78d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F7 10252 bytes

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