Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a1a702bbb965c2…

MALICIOUS

PDF

44.4 KB Created: 2020-08-11 03:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bde853a03a39036b302ea6afb319b9a SHA-1: c2de533cd9432ee27214349e0ae52892d404e1fb SHA-256: d9a1a702bbb965c2e77f56d102092691b794ded3eb744a24937986f594ef953a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=lilly+cardiology+pdf+download'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0434/3631/0693/files/image_color_inverter.pdf'. The document body, though heavily obfuscated, contains text related to 'Lilly cardiology pdf download', suggesting a lure for users seeking specific documents.

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=lilly+cardiology+pdf+download
    • http://files.whitemanonline.com/uploads/1/3/1/4/131406149/rarijufevebonirinixe.pdf
    • http://files.webuysouthernmdhomes.com/uploads/1/3/0/7/130738821/7282874.pdf
    • http://files.donnaliberalistore.com/uploads/1/3/2/6/132681826/9086646.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/image_color_inverter.pdf
    • https://cdn.shopify.com/s/files/1/0434/2962/6017/files/77314544568.pdf
    • https://cdn.shopify.com/s/files/1/0437/8814/0696/files/bisirokufum.pdf
    • https://cdn.shopify.com/s/files/1/0434/3106/7813/files/rolatibav.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/for_you_staind_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0434/9342/5316/files/93397432877.pdf
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/83406444907.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9558/files/87367059578.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/20503483840.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/zekolovulutufoxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/7447/6440/files/2045394694.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/liberation_war_of_bangladesh_1971.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/2836836304.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/
    • https://cdn.shopify.com/s/files/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000702e.bin
20e3f044bb7642b5349fe86161fc9c63e7de311e742ff0e335258217646484c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x702E 5280 bytes
font_01_sfnt_off00008248.bin
6d98cb8ebe2d8aba1d5a703967c445752dcc6a4bd682935245918f75d6bba99d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8248 10024 bytes