Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a23222278d2bf2…

MALICIOUS

PDF

43.6 KB Created: 2020-08-06 05:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8427cf2e8a0b05ff2c3720314908ddda SHA-1: 5853bc5dc151492869cfe3b5388c412e4cde659b SHA-256: 30a23222278d2bf21c5e58380985849671a4f2c11c0ef08d2521575aa16c999c
160 Risk Score

Malware Insights

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

The PDF file contains a link disguised as 'job interview vocabulary words pdf' which redirects to a malicious URL. This is a social engineering lure to trick users into clicking the link, likely leading to further malware or credential theft. The PDF also hosts a large number of external links, many pointing to benign Shopify domains, but one critical link points to a known malicious redirector.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/pify?keyword=job+interview+vocabulary+words+pdf
    • http://files.artisanbuiltins.com/uploads/1/3/1/4/131483002/talegegogopa_zototavufuviz.pdf
    • http://files.sperographix.com/uploads/1/3/2/7/132740498/koxarezet.pdf
    • http://files.stmarymagdalenewpg.org/uploads/1/3/1/8/131856531/badifa.pdf
    • http://files.busybeeorganize.ca/uploads/1/3/0/9/130969004/gojebifazalomo-maxurapokenoxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1520/files/sutepawe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91489653134.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/feviz.pdf
    • https://cdn.shopify.com/s/files/1/0440/7833/4117/files/14982817791.pdf
    • https://cdn.shopify.com/s/files/1/0432/0693/4696/files/jesarifivimarimokozosila.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/87025396312.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/64991408126.pdf
    • https://cdn.shopify.com/s/files/1/0430/0141/3785/files/xigotukepolojufesunuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/49684229396.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/actuarial_mathematics_for_life_contingent_risks_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/9886/4804/files/badinage_trumpet.pdf
    • https://cdn.shopify.com/s/files/1/0431/0656/6306/files/daxogajibo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9704/7718/files/levowerogerexasem.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/
    • https://cdn.shopify.com/s/files/1/0428/9704/7718/files/levowerogerexas

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b18.bin
e3dbe3b06287a7d316ae4c0dbc2730afebd8d45f0aba19f2a24ab278c6dd9a2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B18 5532 bytes
font_01_sfnt_off00007e0c.bin
71ece52b9b4ba3f7bdd41cacd6dc5347f23b2f334d683c71cbb80881ba6f2ef4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0C 10260 bytes