Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e13ebe3e030f5f…

MALICIOUS

PDF

40.2 KB Created: 2020-09-02 18:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e77628b6890a5e8c84d405e908e98aea SHA-1: d17796811c1b169a0b90afb5b5a66fad0f67a42f SHA-256: 08e13ebe3e030f5f45b333d7e378854e84821f7ac7bc2f44378f8333295187f2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link to a known malicious redirector, ttraff.me, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to 'apache helicopter image'. The presence of numerous other PDF links, many pointing to static.usrfiles.com, suggests a link farm or SEO poisoning attempt to distribute malicious content.

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=apache+helicopter+image
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b56239_a6e631a87284442086707dddbd31414e.pdf
    • https://static.usrfiles.com/ugd/0c268c_e592bdf2a645418eb6db9b8a09261c9d.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_64a8ea1f954a4380b7139d422346dae1.pdf
    • https://static.usrfiles.com/ugd/99a8f2_79d87879c12c459a88a242008361dca0.pdf
    • https://static.usrfiles.com/ugd/35c6e2_8c9d944eab9f4d4ea51f38eec9a817d6.pdf
    • https://static.usrfiles.com/ugd/e73fea_5661ececa8ed47439eaa9a22c4a1b3c4.pdf
    • https://static.usrfiles.com/ugd/b8c837_909093583bfc4f7880e0198000c6c45a.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_7468d00a91604f31a5b70430e7594d47.pdf
    • https://static.usrfiles.com/ugd/8cbfce_3acadaf276fb48c6a7d2ccaa3be4962c.pdf
    • https://static.usrfiles.com/ugd/43d598_51324a4b2d044994a0e4bc311dd9e617.pdf
    • https://static.usrfiles.com/ugd/a1fb72_04623f1bf2854127a2f170116f0bdd8f.pdf
    • https://static.usrfiles.com/ugd/02beb7_0846d909020841c7a5499145bef21fd8.pdf
    • https://static.usrfiles.com/ugd/b8c837_e334b50ff0814d4296a42551ef71dad4.pdf
    • https://static.usrfiles.com/ugd/b8c837_10c490bdd8774643ac54b12024c3efec.pdf
    • https://cdn.shopify.com/s/files/1/0466/5648/7589/files/20513538305.pdf
    • https://cdn.shopify.com/s/files/1/0437/3502/3770/files/creative_brief_definition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4885/files/sojuna.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_off00006111.bin
198526eccd92e66870d6edfb43fdb88aa95868dea735e989eab7572d1c550238		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6111 5160 bytes
font_01_sfnt_off00007272.bin
78c335a5b760d3534efc9f210778b4a7b22e30739ef8976d10b8421bc82681d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7272 9796 bytes

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