Malicious PDF — malware analysis report

Static analysis result for SHA-256 2054d441bad0abbc…

MALICIOUS

PDF

50.9 KB Created: 2020-08-30 11:20:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5515010e17cc30c81f43b99fdabd854f SHA-1: 2fbff9fcbf31b518f46abc4bf5183b174ea882ff SHA-256: 2054d441bad0abbcdbbe1c3ae33c715eddd623229801b335f89239d447e507e1
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=java+code+generator+open+source'. This URL is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing its role as a lure. The presence of numerous other PDF links suggests a link farm or SEO poisoning attempt to increase visibility.

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/wix?keyword=java+code+generator+open+source
    • https://static.usrfiles.com/ugd/5ad03d_cc66346edfe84ee58b0229024f0a4ae4.pdf
    • https://static.usrfiles.com/ugd/3fc21f_b9531d30087f4782b43b231cb94419b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_05f9fd05704643bcb590d79a516f4ca2.pdf
    • https://static.usrfiles.com/ugd/b8c837_292e57e6f54449f19591ea43a18221a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_c0b45965979a4c90a5296df37cb5cf00.pdf
    • https://cdn.shopify.com/s/files/1/0435/7462/4419/files/federici_caliban_and_the_witch.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/bettina_bummelt.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98690712505.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/pumotoxudokavo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/dejofojinibosoge.pdf
    • https://cdn.shopify.com/s/files/1/0432/6778/4864/files/dotonbori_eating_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdf
    • https://cdn.shopify.com/s/files/1/0428/2092/7644/files/sab_avellaneda.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/73138055257.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_off00008036.bin
f54300156d6c2c4c101ddf160fe31d26f0fae8544ba8acb572558ec6cef7e32d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8036 5260 bytes
font_01_sfnt_off0000921d.bin
54139fd28bb3ef51ac93bf5b69210c60db0253e0f118f40b8d766bf40d377265		 pdf-font-stream PDF embedded font (sfnt) at offset 0x921D 14020 bytes

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