Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1629eea69e0928…

MALICIOUS

PDF

48.1 KB Created: 2020-08-06 12:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e1c09581af1a9ab82f33f79690c8003 SHA-1: 754e584e3a1d602a907969a2a1c2331b02db4c72 SHA-256: be1629eea69e0928911e128c341f6d1facd7e2428e33dd9e334bb69d21a565af
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL identified is https://ttraff.ru/pify?keyword=candidose+digestive+pdf, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, contains references to the redirector URL, reinforcing its role in the attack chain. No scripts were extracted, limiting the analysis of direct payload execution.

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.ru/pify?keyword=candidose+digestive+pdf
    • http://gulum.naildesignhouse.com/uploads/1/3/0/7/130775734/bazuvugijewikirix.pdf
    • http://files.mamzette.com/uploads/1/3/1/4/131454355/pinenebofenumego.pdf
    • http://files.localhoodnews.com/uploads/1/3/0/9/130969477/popuzefafer.pdf
    • http://files.thegreatescape4u.com/uploads/1/3/1/3/131379042/seteneva.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/mukebipe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5345/6289/files/www._paperlessemployee._com_target.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/74392804337.pdf
    • https://cdn.shopify.com/s/files/1/0431/6925/1492/files/77695013740.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/najorukizawevilawixugo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0397/6614/files/abbyy_transformer_3._0_full_mega.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/52219719761.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9787/files/62033321483.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2954/files/alimentation_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/5152/4008/files/68213552585.pdf
    • https://cdn.shopify.com/s/files/1/0433/9774/2750/files/29313531858.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9831/files/dolaponezodipatu.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_off000070ad.bin
fca8a957c41670f4e1dfe42383aa1739d2c4e6f02a862b3e3a28d2e717899897
pdf-font-stream PDF embedded font (sfnt) at offset 0x70AD 4952 bytes
font_01_sfnt_off000081ab.bin
558697bdcd51f51d80b94309d59ece53913471522bbafda44cd010da618b0c19
pdf-font-stream PDF embedded font (sfnt) at offset 0x81AB 10416 bytes
font_02_sfnt_off0000a50c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA50C 4324 bytes