Malicious PDF — malware analysis report

Static analysis result for SHA-256 4457be65930bce42…

MALICIOUS

PDF

40.7 KB Created: 2020-08-29 13:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f4329023f6fc9e80b898175df0207e5 SHA-1: e900121640f6e6046be2361f7bb7fc5b95b70839 SHA-256: 4457be65930bce42f9c6202a6cd86915a969dd3624f562f126e066f950a1f7d7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, forming a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=ragnarok+m+pet+guide'. The document body, though heavily obfuscated, contains references to 'Ragnarok m pet guide', suggesting a lure to attract users to click on the malicious link. The presence of a link farm and a malicious redirector indicates a phishing or redirection attack.

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=ragnarok+m+pet+guide
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/normal_phase_and_reversed_phase_chromatography.pdf
    • https://cdn.shopify.com/s/files/1/0433/6310/6968/files/lovusoliwetalemilalarur.pdf
    • https://cdn.shopify.com/s/files/1/0438/5649/4757/files/xikerosejuwonev.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/valasupuxuzitete.pdf
    • https://cdn.shopify.com/s/files/1/0438/2860/9186/files/basketful_of_moonlight_workshop.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/balance_of_power.pdf
    • https://static.usrfiles.com/ugd/b8c837_3675fb5c98b3446fbc976eeab6f6743e.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fef6998794846d1a3f7112cc3b3cd04.pdf
    • https://static.usrfiles.com/ugd/b8c837_3cae11349c0f48c1aa905d019fc1a3b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_eef54927fd6044ec98414eab34bbf979.pdf
    • https://static.usrfiles.com/ugd/b8c837_1419d63d92f34f3ca6cab4cd2a702b00.pdf
    • https://static.usrfiles.com/ugd/b8c837_00f12b5f256a46199567452546e0d61c.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_off0000612e.bin
7281355a4b30577f6ab92b0812bc4f1d7295e1b1cfab71f3d25be4ff88aeaf64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 5140 bytes
font_01_sfnt_off00007299.bin
6694a2663b82e3b59483bbf4db7976683ec09c975438f01ac47e83974c79873a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7299 10480 bytes

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