Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e422570e334f65…

MALICIOUS

PDF

33.1 KB Created: 2020-08-31 03:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f9b7799d06578f0290820fc94c386dfd SHA-1: eb652e9b2e8346775f5a185e80bcbb3acbad3056 SHA-256: 72e422570e334f6542369a397c9421bd9406eb89f9dc0f1cb2552ee60c0c702e
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, suggesting an attempt to drive traffic to malicious content. The document body, though obfuscated, contains text related to 'Fut draft fifa 16' and the malicious redirector URL, indicating a lure to entice clicks. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector.

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.link/wix?keyword=fut+draft+fifa+16
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1666/6786/files/pdf_to_word_top_software.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/9452364281.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/modefusinulipata.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5527/files/wuzeti.pdf
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/9330090398.pdf
    • https://static.usrfiles.com/ugd/b8c837_1fd470b8877947c292e1a654f1a01b2e.pdf
    • https://static.usrfiles.com/ugd/ac72e0_de3f9d569de7457db2204fa47dc0f584.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf155e1798dc4d58ad38a62e6c9f8df3.pdf
    • https://static.usrfiles.com/ugd/58a813_4e564921417542a797d21c6e0c38c81e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b224d8e76dea45cda904ec41700dd946.pdf
    • https://static.usrfiles.com/ugd/493135_7e2823231ea44b198a867889c499a85e.pdf
    • https://static.usrfiles.com/ugd/7c3584_400e10a99ac946bca4319dd12b4795da.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa8ddde92ec6495d841936d40d884399.pdf
    • https://static.usrfiles.com/ugd/fd30ac_52545c193dac4275a9b24ba603084df0.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_off000045d2.bin
c6f460ae82ca7bb63ea5b640a38b97393733d819a2f8538a544f2e5bba3e1027
pdf-font-stream PDF embedded font (sfnt) at offset 0x45D2 4852 bytes
font_01_sfnt_off00005662.bin
8208a439de3673dda750ea15a3b0b05bac811befe933d96104cea58413f9d75d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5662 9944 bytes