Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c52a8e743f0f6a…

MALICIOUS

PDF

47.2 KB Created: 2020-08-30 12:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cb8d703ea4536d4d42984c275269b9d SHA-1: 8aacf0dc27b95578778bfab8043974e4df0a7058 SHA-256: 67c52a8e743f0f6a02d9d430eeb7e799102fa3369772af9c1c9ac81d53d048ba
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. The primary redirector URL is https://ttraff.com/wix?keyword=antimatter+dimensions+mod+apk, which is flagged as malicious. The document body is heavily obfuscated, but the presence of the search query suggests a lure to download potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/wix?keyword=antimatter+dimensions+mod+apk
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_a496ec9dafba4540af55f577d62db32e.pdf
    • https://static.usrfiles.com/ugd/b8c837_a86cc98d60f048a99d863c5b6d6b8d42.pdf
    • https://static.usrfiles.com/ugd/f523c3_f9e97a9f3d914f09ad65d6e4c5a6372b.pdf
    • https://static.usrfiles.com/ugd/b8c837_132eb013f89043e59db09a7000f93195.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd304fa80b284c0da156ffa63fbaaa78.pdf
    • https://static.usrfiles.com/ugd/87a178_4c499cec1be546c889c64d888ea528f7.pdf
    • https://static.usrfiles.com/ugd/ea2f88_4e14d662efc94671a863b48f3b0a26bf.pdf
    • https://static.usrfiles.com/ugd/badafb_5fb6e08cddea4d9e9af93e8bdfb30806.pdf
    • https://static.usrfiles.com/ugd/02beb7_cca6f8f659d84878b7c5fb7a3823384b.pdf
    • https://static.usrfiles.com/ugd/1f2646_0617b986931541bda48280e3630798a9.pdf
    • https://static.usrfiles.com/ugd/33ab24_6794d02eafc4473f8565a8316c1ef726.pdf
    • https://static.usrfiles.com/ugd/b8c837_464719e5afc041edb69eff43dd4ba4bb.pdf
    • https://cdn.shopify.com/s/files/1/0437/8882/8829/files/xovuroxexuwupabuxom.pdf
    • https://cdn.shopify.com/s/files/1/0438/2933/0077/files/inurl_index_of_password._txt.pdf
    • https://cdn.shopify.com/s/files/1/0432/2118/8763/files/college_baseball_world_series_bracket.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a48.bin
235a0670c779fc805cbaac1ffa0c38068068af0b22b5fff8ea864c7177852a06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A48 5124 bytes
font_01_sfnt_off00006b8c.bin
3eadf3ff1ae85f7a2dd8be852d633ca148c1d24200a16cbd4325889adc5789c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8C 2140 bytes
font_02_sfnt_off00007566.bin
b4e51ef6b9f835fb232b35b39257b4b0dfadf16fd7a688608e4f4afc01df4e9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7566 10524 bytes
font_03_sfnt_off00009977.bin
d2619b9a2a7dec81ecbbf05c496b7f5492bc56d5eefc2cd48183daaf603cb6ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9977 16160 bytes

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