Malicious PDF — malware analysis report

Static analysis result for SHA-256 94178c789cbae810…

MALICIOUS

PDF

60.4 KB Created: 2020-08-31 08:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0362359728d12c5a32d6c1aaa0ffb31d SHA-1: a6e0a6aeb36ae2b49b98e2fd6ccc515fb3a88071 SHA-256: 94178c789cbae8108238cb243cbb9f766e3dc9841b9ab1154e1088d875bbfe0f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of embedded links, suggesting a link farm or phishing lure. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the ttraff.link URL, which likely serves as a redirector to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/wix?keyword=tipos+de+agarre+manual
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/format_for_sending_email_to_professor.pdf
    • https://cdn.shopify.com/s/files/1/0430/6927/6313/files/chicago_cubs_trivia_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/sinaxamigipobisitatu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/43012208766.pdf
    • https://cdn.shopify.com/s/files/1/0436/3255/8240/files/valid_email_addresses_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/49_angelic_symbols.pdf
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/80602466514.pdf
    • https://cdn.shopify.com/s/files/1/0437/5881/3341/files/restaurant_business_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7959/files/94029822560.pdf
    • https://cdn.shopify.com/s/files/1/0431/4441/3350/files/channing_tatum_pony_performance.pdf
    • https://static.usrfiles.com/ugd/b8c837_97127c41518d436d95f93a6150ba9786.pdf
    • https://static.usrfiles.com/ugd/086daf_512f737cebbe4c2987e16e8bf1c07876.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_090a4e54dee44266831914e3442b3bd0.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b1a633001ce4af7bdc2582769e90779.pdf
    • https://static.usrfiles.com/ugd/0d9a50_cf4e7756e3534c24a51346d4a1584a81.pdf
    • https://static.usrfiles.com/ugd/fd3290_2531dd3c4cd0455383c8bf7f08b7def4.pdf
    • https://static.usrfiles.com/ugd/8cbfce_908e29f77997499fae167cb751b24624.pdf
    • https://static.usrfiles.com/ugd/b8c837_a3912266a6694ec7a4038ccb1f1778ca.pdf
    • https://static.usrfiles.com/ugd/9ea91e_f950b9c2f67b4e5caea93b826a027087.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aa51.bin
746f80dba37ecd87dad1dfc246bb9db2cfcfcbccb83df065a2fabd35e5962f84
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA51 5228 bytes
font_01_sfnt_off0000bc00.bin
c19150f4f92275f785e2aefdb4e7b42ae1f51a200d3439b282c112c44af56ee1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBC00 12164 bytes