Malicious PDF — malware analysis report

Static analysis result for SHA-256 54e489986eed79b1…

MALICIOUS

PDF

43.7 KB Created: 2020-08-31 04:44:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d9e695a196c118b8fee1a906b4072ae SHA-1: e46dbdf835137191de50d8979263b1184c251db9 SHA-256: 54e489986eed79b1c2ba44b31c4127950bc2694db739591eecd40eb8d2d08882
152 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to "musica dragon ball z mp3". The presence of a large number of external PDF links also suggests a link farm for SEO manipulation, potentially to drive traffic to the malicious redirector. No scripts were extracted, limiting the analysis of the payload delivery mechanism.

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.ru/wix?keyword=musica+dragon+ball+z+mp3
    • https://static.usrfiles.com/ugd/44b221_d0e83e45eae14a8996bfc703c3aa357f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1e4da36dce141feb0eaf4e5a9f6c9eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_8a137896d67c4e77980d30d20b4a3800.pdf
    • https://static.usrfiles.com/ugd/9a242c_82bc3baef9d34e76a731b19ced0b2dc1.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf703661b1b440a5b9a3181c2ce5b30c.pdf
    • https://static.usrfiles.com/ugd/89363e_b6a20658775c4d97bb271090b938315d.pdf
    • https://static.usrfiles.com/ugd/f7fbc8_6319ec770e0b494aa139f96b1df35d0a.pdf
    • https://static.usrfiles.com/ugd/122077_74e592a33d9a4c6997fed566cfc1ac63.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_14d92bb8defd41a8bb536c840233b65d.pdf
    • https://cdn.shopify.com/s/files/1/0432/8528/2980/files/11264800944.pdf
    • https://cdn.shopify.com/s/files/1/0454/6340/4694/files/banana_island_game.pdf
    • https://static.usrfiles.com/ugd/f0e51d_9a1493720c514fe5b543bcc9352eabef.pdf
    • https://static.usrfiles.com/ugd/c1de29_a97359a12d8f4499b6d763906ebec286.pdf
    • https://static.usrfiles.com/ugd/69695d_78302718d0e34989beb77e2903e5bd1b.pdf
    • https://static.usrfiles.com/ugd/c83fdb_9bd101b7e07c4ae8be2e81b301e14bf8.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2a7b9e453ab42369fa6184c26b403f4.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_off000054d1.bin
f173fffa612889aceb7a2d3d0c7485a2ce061c398d12c07cbe47838da8505fb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54D1 5752 bytes
font_01_sfnt_off00006852.bin
0c5c1fbafd70b6543a1718de53e30687618b206be9a8a439034bb98afe042c1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6852 10428 bytes
font_02_sfnt_off00008c02.bin
028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C02 16312 bytes

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