Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aec1876a42e761d…

MALICIOUS

PDF

61.9 KB Created: 2020-08-30 17:03:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbd473901c601f4f0fef76cc8681d211 SHA-1: 2096d7d8fef81fd6446332434be40701c0b94b84 SHA-256: 7aec1876a42e761d8552bfcb38a18905287daf088c56217a25ba981d6bfc3183
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.ru, which is likely used to obscure the final malicious destination. The document body and embedded URLs suggest a link farm designed to drive traffic to potentially malicious content. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a phishing or redirection attack.

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=good+afternoon+dibujos
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/67895369408.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/mugexejodagisimux.pdf
    • https://static.usrfiles.com/ugd/8d57bd_52d53f9f7ad7403aa100e7b6eb4e3888.pdf
    • https://static.usrfiles.com/ugd/162fe6_fbe439a729bd4cf7abb8d9a701aadf94.pdf
    • https://static.usrfiles.com/ugd/a838c0_cec4c3d7378d40d4b2ef36754aced56b.pdf
    • https://static.usrfiles.com/ugd/eda9ba_041e6f9d7d344620b8477672e0457a47.pdf
    • https://static.usrfiles.com/ugd/b8c837_97bb5a741a0e419a82bba4f1c117ca3a.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5f0b8d127c7440aa11bdf2ae9256a3a.pdf
    • https://static.usrfiles.com/ugd/b8c837_931b0e9b7100493282f08215d2cce20d.pdf
    • https://cdn.shopify.com/s/files/1/0436/5815/0046/files/71945118882.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3996/files/majudafub.pdf
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/frankfurt_airport_map_terminal_1.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
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e97.bin
321218067013d167bba8a76caf5c9675a5cd7355da82d397b62bb6a72a9beb40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E97 2872 bytes
font_01_sfnt_off000078d3.bin
8f8dd27de24d899621f08e18ac379c5e9440f8b012c558716170191d0abee9cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D3 5116 bytes
font_02_sfnt_off00008a12.bin
fc3f497b3cf44bf45220bb62a49c2ff2d9cf965ffbbdf2465b1db0aebb960dfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A12 6488 bytes
font_03_sfnt_off00009a07.bin
a146c32fc63a530f987f352044ded46db2b45785c0b4d23ea159987e4dc56869		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A07 11740 bytes
font_04_sfnt_off0000c0e3.bin
6f90cc0fdb6aa76189caa9a39ef616f9cf839de41971c3c5eb5c0e2342934898		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E3 17404 bytes
font_05_sfnt_off0000dab3.bin
4b1e4541a79c5b9ac8ff782e38aa07ae99ee280a1a41e034e5525552d7737cc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB3 6064 bytes

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