Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a206ea4605b86f9…

MALICIOUS

PDF

43.7 KB Created: 2020-08-29 15:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb06832a04db186011d1c6a9b61ffbab SHA-1: 33c2a2c2ae9b0f1fbdab951d7dd2678cadee85dc SHA-256: 7a206ea4605b86f987892e49a72ab6598f20744bf258184f99e1a249dddd93d0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to a malicious site. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to a book title. The presence of numerous external PDF links suggests a link farm or SEO manipulation tactic to increase visibility.

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.cc/wix?keyword=the+littlest+angel+charles+tazewell+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/9c43ec_cacc96b06795478da59367706113404c.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7dff08cdc934edf9583b34df90f6ec4.pdf
    • https://static.usrfiles.com/ugd/b8c837_a7980357f7b346768abc43f292b356c5.pdf
    • https://static.usrfiles.com/ugd/dd4472_597a5e739b17481fa13adaaea852a19f.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7005530455844639a6d12986b0729cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_60aaee2e208e4dbaaa5c02bb66bc77a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_042ded1c11234268b377a95cc34b3e07.pdf
    • https://static.usrfiles.com/ugd/b8c837_b598d61539d341b69596c25235f27f7c.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/riwonosoteged.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5193/files/git_delete_last_commit.pdf
    • https://static.usrfiles.com/ugd/b8c837_9151738f30464518a1a30bcad4501425.pdf
    • https://static.usrfiles.com/ugd/b8c837_382e334395aa4a4f8bcb044adaced5c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e34c66d08774e7887b22592ed906c54.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c39.bin
3d9d153f72f2291edefd29b1fd7cb806e12647b9f4d0b1de0f34fdaa20911223
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C39 5508 bytes
font_01_sfnt_off00007f03.bin
6a31e7ddf5380700a391c2f29f02e90c3880f820fa561ef0107a64d5a08839f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F03 10088 bytes