Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ed65635f5c30651…

MALICIOUS

PDF

49.8 KB Created: 2020-08-05 00:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7610f43c002bc4c7f9ff673cfbc179e7 SHA-1: acb780576b26bd25f8587b55142b294c43c7f8b2 SHA-256: 4ed65635f5c30651f630c1569e7709e6022d6254583540bff41d044efe3bb7be
120 Risk Score

Malware Insights

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

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=agamenon+seneca+pdf'. This indicates the document is designed to lure users to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com, suggesting a broader campaign for SEO manipulation or traffic redirection. No scripts were extracted, but the primary attack vector appears to be the embedded malicious URL.

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.cc/pify?keyword=agamenon+seneca+pdf
    • http://files.hensleyvoicestudio.com/uploads/1/3/1/8/131871850/dikijon.pdf
    • http://files.secondhandlife.org/uploads/1/3/1/3/131384635/5748555.pdf
    • http://files.thesightsoundgroup.com/uploads/1/3/1/6/131606758/tusutoxuruvese.pdf
    • http://files.florenceashley.com/uploads/1/3/0/7/130776363/fufaduxuzataluse.pdf
    • https://cdn.shopify.com/s/files/1/0430/9912/7957/files/58760091107.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/28489817863.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6339/files/49398206701.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/71723271143.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5671/files/69984412635.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/57525692727.pdf
    • https://cdn.shopify.com/s/files/1/0437/4183/9511/files/adwords_express_promotion_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11085861466.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/gadavi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/34723835649.pdf
    • https://cdn.shopify.com/s/files/1/0432/0906/4607/files/occupations_vocabulary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/jurnal_bronkitis_akut.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/80550520965.pdf
    • https://cdn.shopify.com/s/files/1/0429/8879/8111/files/wemosisagaxibujamimanifa.pdf
    • http://www.repositorio.ufc.br/handle/riufc/8112
    • 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_off00007916.bin
1a84b276b6cdbfdadab6f3e0ed8c011ad71c0ab8799fce17cfd167795e133fd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7916 3520 bytes
font_01_sfnt_off00008573.bin
4de98bae0288df0c84b56d4f6a8ecf7de2a95e24f4b17f7b113dd1ff3dd36d38
pdf-font-stream PDF embedded font (sfnt) at offset 0x8573 5336 bytes
font_02_sfnt_off00009799.bin
c7ab6e6aaa7c9760db7d9e5cd1e97405f9cac342b01e1957857eaebad32e3830
pdf-font-stream PDF embedded font (sfnt) at offset 0x9799 9976 bytes