Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3cbc9756e4149b7…

MALICIOUS

PDF

38.9 KB Created: 2020-08-31 03:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 584c3f56421819115598c502f282d4fd SHA-1: 16bbbcb52bbb6433ed0387d807134cb1b8badebe SHA-256: e3cbc9756e4149b7e4b66815d10643148e02429a20365c676820f6e0af27bb73
120 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, disguised as a free sheet music download. The document body and embedded URLs indicate a lure to download content from external sites, with one URL pointing to a malicious redirector. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link 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.cc/wix?keyword=stranger+on+the+shore+sheet+music+free+download
    • https://cdn.shopify.com/s/files/1/0464/4824/6952/files/15625137530.pdf
    • https://cdn.shopify.com/s/files/1/0452/0201/4357/files/ridiculous_6_full_movie_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/rifimo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/31939688887.pdf
    • https://static.usrfiles.com/ugd/09273f_c8ad4101524843929a8390f348d72934.pdf
    • https://static.usrfiles.com/ugd/05301a_e2e54f4a02c74831a63f8ecb03331287.pdf
    • https://static.usrfiles.com/ugd/de60da_d54720495b924a1aab451e41be15a36c.pdf
    • https://static.usrfiles.com/ugd/77d535_8b68d787671c48a6b2babcd70089c0a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_ff64073e6f094029b9ea28720b173fae.pdf
    • https://static.usrfiles.com/ugd/105a8c_1447dcd2486e44f4a9fe50fafc7f8cb6.pdf
    • https://static.usrfiles.com/ugd/0c268c_9b15742370c64a05b63e44bc9a593683.pdf
    • https://static.usrfiles.com/ugd/b65acf_2b36f426a4d640808a4ea9b507e31161.pdf
    • https://cdn.shopify.com/s/files/1/0430/5593/9733/files/16204669623.pdf
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/bacterial_dna_replication.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_off000049db.bin
5d44e2b020d940476a3b87757f1ad743bbe3345085289e6b9420b3e65abb60e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49DB 5512 bytes
font_01_sfnt_off00005c72.bin
23476088886e48aa8017d481a41df77a97c34ff38125e06fc7ac2cefb88b008d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C72 10600 bytes
font_02_sfnt_off0000803e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x803E 4324 bytes

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