Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e12b69c30af3961…

MALICIOUS

PDF

43.4 KB Created: 2020-08-04 20:43:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 721b8e32da3405b9ba135064f33ac2b2 SHA-1: b07741efd1e464516be36a5d3eb44b10cfcd7e54 SHA-256: 7e12b69c30af3961cc2da608f256e26cb94b2dfe0e51a23eb96852cd5ce3f492
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=addison+wesley+mathematics+10+pdf'. This URL is designed to lure users under the pretext of providing a mathematics PDF. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. While no scripts were extracted, the primary attack vector appears to be social engineering via the embedded malicious URL.

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.cc/pify?keyword=addison+wesley+mathematics+10+pdf
    • http://files.nuvoicesla.org/uploads/1/3/0/8/130813134/gegosowutoneredujoju.pdf
    • http://files.lesliemcgeaghhypnosis.com/uploads/1/3/1/3/131379650/xuruz_xapomula_wujemenejanafe_dukudu.pdf
    • http://files.deefacepaint.com/uploads/1/3/1/4/131453588/nezusamumokilu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7556/files/how_to_fill_a_big_reactor.pdf
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/panasonic_universal_remote_code.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/jolasu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52135332303.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/93409350935.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/4394943820.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29331550606.pdf
    • https://cdn.shopify.com/s/files/1/0428/6382/0959/files/19178379672.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/gre_argument_pool_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/40665671862.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4515/files/resozamirafupiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/purov.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050b9.bin
e4f2e85b9a94cca1beba83639c356616e3e44cd732d4eb78293683085ef284fe
pdf-font-stream PDF embedded font (sfnt) at offset 0x50B9 5676 bytes
font_01_sfnt_off00006400.bin
b534decb8328bd08b11dec775027e5e77c4fc6f3254375cd51eb6a81f12cb025
pdf-font-stream PDF embedded font (sfnt) at offset 0x6400 9976 bytes
font_02_sfnt_off00008651.bin
d0644663986ebbb812f7c2ba20ce6348cfa331a3ca32e70c41a12a21f1cf199f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8651 17200 bytes