Malicious PDF — malware analysis report

Static analysis result for SHA-256 529f30a04cf88cf7…

MALICIOUS

PDF

51.4 KB Created: 2020-08-31 06:07:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64034643515af68c48ac561e309806cf SHA-1: 61435bb719eba628d60fba8af68fa8e86571755e SHA-256: 529f30a04cf88cf768a07c928da7d51a825c69a15b02a1a07e940028d6d9d961
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/wix?keyword=intel+core+i5+2300'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including 'https://static.usrfiles.com/ugd/b8c837_9dd1a6c190a54607aff23b0eed7ca08b.pdf'. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to disguise malicious activity as legitimate content. The primary attack pattern involves luring users to a malicious site via deceptive links.

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=intel+core+i5+2300
    • https://static.usrfiles.com/ugd/b8c837_9dd1a6c190a54607aff23b0eed7ca08b.pdf
    • https://static.usrfiles.com/ugd/7198c1_72185b7a390e4b85ade8203c9c626ed8.pdf
    • https://static.usrfiles.com/ugd/a18aa6_4082eb8ddb964fca9c1500ed65ff3170.pdf
    • https://static.usrfiles.com/ugd/b8c837_b6e58425420a424886fa6e7d8e2336de.pdf
    • https://static.usrfiles.com/ugd/b8c837_f67df672cd824cac8ab189471f21bafd.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/27150606360.pdf
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/5653782031.pdf
    • https://cdn.shopify.com/s/files/1/0440/8924/5861/files/southpaw_full_movie_hd_free.pdf
    • https://cdn.shopify.com/s/files/1/0462/7342/9661/files/definition_broadsheet_newspaper.pdf
    • https://cdn.shopify.com/s/files/1/0445/5959/7727/files/28218651974.pdf
    • https://static.usrfiles.com/ugd/b8c837_594e62a26def4f958d9c5a3b23c604a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_33ed2aa250824ee2b529c83309b153c1.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_888c41ead6b549b09abe25556054761c.pdf
    • https://static.usrfiles.com/ugd/2274a7_e932d3f96394403690361076c5755fa4.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7ea4b6579c442b2aeb73c51e33c3a11.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/buttocks_and_legs_workout_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mavadusuwavofemikedoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/wazijapazosa.pdf
    • https://cdn.shopify.com/s/files/1/0429/3754/8959/files/the_count_of_monte_cristo_short_story.pdf
    • https://cdn.shopify.com/s/files/1/0436/0755/6258/files/36415629400.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
stream_004_off00006b6e.bin
ae7a6f643aae1559557828dade1664f42f873e0bf0e24f666fdef2ee9060cc60		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6B6E 13888 bytes
font_00_sfnt_off00005ab9.bin
0c869a16144dacd4e30f86454af3775b5552222b72f6bf75fb95a005f262e7b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB9 4904 bytes
font_02_sfnt_off00009330.bin
3ee39b38c1b5808e6ceacc2eab20d7ad2ef41f813e188ddaf16a1410f7b9e4b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9330 14528 bytes

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