Malicious PDF — malware analysis report

Static analysis result for SHA-256 6005d49f77763b9b…

MALICIOUS

PDF

53.6 KB Created: 2020-09-07 15:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2069ac5aa077bdcb2ba77b874dde986e SHA-1: 27835aacfc10b3a058e4992eedc4d271f9a8ae14 SHA-256: 6005d49f77763b9b5e921c5d9183c55bfc7fa45065aa8ae654a6e9303670b8bc
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.me, which is disguised as a search result for 'antivirus para celular android melhor'. The PDF also contains a large number of external links, many of which point to PDF files hosted on static.usrfiles.com, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious.

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.me/wix?keyword=antivirus+para+celular+android+melhor
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/2e4eb4_6da198f14a1749c089f5be8d43d4c3a6.pdf
    • https://static.usrfiles.com/ugd/808cd0_c3e991bf55f44b4eb31a7b164b8ea04e.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_cc5d91186f16485bbcd1d076e2bb71fc.pdf
    • https://cdn.shopify.com/s/files/1/0464/6132/1384/files/minecraft_music_discs.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/9821064334.pdf
    • https://static.usrfiles.com/ugd/345929_afefb0075aef4e6d96ba457f1dc15ccf.pdf
    • https://static.usrfiles.com/ugd/3e5db3_406d2b76139747258681c39b11accda7.pdf
    • https://static.usrfiles.com/ugd/8a9bcc_5186bd3fed5a41c3ac5a2e49889eedcc.pdf
    • https://static.usrfiles.com/ugd/3aca14_3eef09c9764741518b6b7a790690e90e.pdf
    • https://static.usrfiles.com/ugd/aaaf79_a05225c7feb94e82bb5a4ae9daea06fd.pdf
    • https://static.usrfiles.com/ugd/7f614e_2e2bd7e9bb604f1aba9f7786ccc5affc.pdf
    • https://static.usrfiles.com/ugd/338562_8ec619d9216d4f898ccd3b3ce8765e34.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_off0000734b.bin
7b6b5295b5cf9ac4dcbeff5679d83b604908565f86dfaaedf1e01a3abd79e49e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x734B 5364 bytes
font_01_sfnt_off00008557.bin
f5e3bacab7481ceab5c52ed38eacd95f3004b278b2e41736f0c2eace43fb2876		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8557 2512 bytes
font_02_sfnt_off000090a9.bin
4135b43eca909a2994006a5bb001d4973a12c4fda60b4beb0019beae603ac592		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90A9 10272 bytes
font_03_sfnt_off0000b400.bin
bc1c1644e30597ae0beaac312b9749a82b64e26c109397326cdc67fdbaf2fe17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB400 16036 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.