Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ab88f373600d23…

MALICIOUS

PDF

38.5 KB Created: 2020-09-03 04:38:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f6049b80221e2bbcf5e6598a8ae3fa7 SHA-1: 0a691c2fc0caf48da1ee59f18997184af4df7bfb SHA-256: b6ab88f373600d233c946e65b207791e337e491d6d216cbb2035887f5b970dc4
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a prominent redirector link to 'ttraff.me' which is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'Street fighter 4 hd full version apk' and the redirector URL, suggesting a lure to download a fake application. The presence of numerous links to 'static.usrfiles.com' further indicates a link farm designed to distribute malicious content.

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.me/wix?keyword=street+fighter+4+hd+full+version+apk
    • https://static.usrfiles.com/ugd/b8c837_9ad48b43fafa4531af53524faa141fbf.pdf
    • https://static.usrfiles.com/ugd/b8c837_af05412463db4ea1863235083310c7d7.pdf
    • https://static.usrfiles.com/ugd/5b604d_adb71cc2a9814022a2b9ccf510415aa6.pdf
    • https://static.usrfiles.com/ugd/e4a001_471de907b05c4a278ad6440ed7e263a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_997157d551bc4884a913108b97e2cfbe.pdf
    • https://static.usrfiles.com/ugd/f1780b_e81f477442004bbb92f7e65fffb5bcd7.pdf
    • https://static.usrfiles.com/ugd/930050_54740c90299745c79bd9cdd68a680604.pdf
    • https://static.usrfiles.com/ugd/24853a_445cd714e95b43879ae6c8d83cb05e48.pdf
    • https://static.usrfiles.com/ugd/4b7290_129ef42526a4430ca637aca7ea1f96e2.pdf
    • https://static.usrfiles.com/ugd/225520_3407474cb84a4085bbcdc8da2c315f3a.pdf
    • https://static.usrfiles.com/ugd/d7d6cd_dfbf4062cc93422ea03b0d8c231255e5.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/timux.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3846/files/gulipawopotud.pdf
    • https://cdn.shopify.com/s/files/1/0436/6044/3813/files/putimule.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.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_off000057c3.bin
d83721ea48ec600c1e8ccb3e6f7a72e2da32b400822367e99ff665399b2acae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57C3 5620 bytes
font_01_sfnt_off00006aec.bin
af7fda16858a33f3600e2199843f07810b0a183d748f8b2861814562f952522e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEC 9928 bytes

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