Malicious PDF — malware analysis report

Static analysis result for SHA-256 2609b4546db85dfc…

MALICIOUS

PDF

39.2 KB Created: 2020-09-01 00:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 406b695e27a6b6cbe87ee995d04848d3 SHA-1: a2db47e53f36e29ac5c1594cc52d84bd242e066c SHA-256: 2609b4546db85dfc1b897c3998aeea28ff4cade99e6efa90680becb55f711c04
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One of the primary links, 'https://ttraff.ru/wix?keyword=battle+cats+mod+apk+2018', is flagged as a malicious redirector, suggesting an attempt to lead users to harmful content. The document body, though heavily obfuscated, contains keywords related to the malicious URL, reinforcing the lure.

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=battle+cats+mod+apk+2018
    • https://cdn.shopify.com/s/files/1/0430/9978/3319/files/36531914653.pdf
    • https://cdn.shopify.com/s/files/1/0431/0407/5933/files/wopexukivora.pdf
    • https://cdn.shopify.com/s/files/1/0434/6449/1174/files/fogitaxupowowigekuvatijiw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/geometric_shapes_and_names.pdf
    • https://static.usrfiles.com/ugd/b8c837_66628c131d9b48abb03ec98d06b2095a.pdf
    • https://static.usrfiles.com/ugd/ea78e0_e3a1fb6f00f4417c847a5765a3fce08b.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_51fb6c210a6145449251ada8f0607e87.pdf
    • https://static.usrfiles.com/ugd/9421c8_e7eade62784c45d8bc42e5a610745e83.pdf
    • https://static.usrfiles.com/ugd/cc089a_1bc3167f60524a058e715c0e6b13329d.pdf
    • https://cdn.shopify.com/s/files/1/0435/0912/1184/files/abstrak_sa_akademikong_pagsulat.pdf
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/bojeloxosabejeviv.pdf
    • https://cdn.shopify.com/s/files/1/0469/9226/1272/files/maxazaruwizagewuzunu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulanevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/40395747710.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/ralimamidore.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/mozagavurik.pdf
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/fizoludizutuluxated.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/82202497821.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_off00005954.bin
86792b915441ed6a5ed8e386a08a09e9c3d20b2e672dbd0af5eadf47b8e6411c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5954 5756 bytes
font_01_sfnt_off00006ce2.bin
91dba0974e740ce3bf11e0addfdb284cb9daea15489ee2cf31a75fe298d744d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE2 10296 bytes