Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1579bf7629608b7…

MALICIOUS

PDF

85.0 KB Created: 2020-08-30 22:59:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 844430205c14093f53f54dfeb3f55848 SHA-1: 9d2b924ccef24e7eb001de39f7eeefc6a0f3a678 SHA-256: b1579bf7629608b798d240e0275957d7651b52bd043e3b59d6adf804ebf4827f
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to drive traffic to malicious infrastructure.

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/wix?keyword=research+methods+design+and+analysis
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/lamukizalozeg.pdf
    • https://cdn.shopify.com/s/files/1/0436/1116/0738/files/maratebilav.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/88444950414.pdf
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/keyboard_hex_codes.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5da69e4631440b58f7fcf8c8e94b7ee.pdf
    • https://static.usrfiles.com/ugd/b8c837_c02f80ebf58c47f5a7dda6f58f20754d.pdf
    • https://static.usrfiles.com/ugd/b8c837_01abae187c814641bd7c5b67a3d3278f.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_b5c9120819f64fc1aa4517e6c5c419c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_702437aa5afd4e388172c573124b41df.pdf
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/xusumuwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1153/7053/files/kigivobaruruxawubefebagut.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/17659090387.pdf
    • https://static.usrfiles.com/ugd/8acad3_4365217d8cf842bdb9bd611be4e5bcb8.pdf
    • https://static.usrfiles.com/ugd/60933b_cc0407462a874c04924e29332bbd9dd0.pdf
    • https://static.usrfiles.com/ugd/b8c837_4122a60ba22740319772efdb9658b1f8.pdf
    • https://static.usrfiles.com/ugd/278743_178b3da42f6f4c26b20c277dff714044.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_off00010310.bin
bdfa4bfbb50a022472dd4aafaea22be1e3c6bb7899756507c742ce7012098d3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10310 5252 bytes
font_01_sfnt_off000114c4.bin
d6c3e8e4775bd0258b005cac78313595d3e381a03f8a394b093056b10ebf4e1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114C4 10248 bytes
font_02_sfnt_off000137d3.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x137D3 4324 bytes

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