Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace56c947f605b6e…

MALICIOUS

PDF

47.3 KB Created: 2020-08-02 13:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2165872e3c1cc00dc4cf98790fe65dfa SHA-1: 5e1acf4c30290d38ffc261e1dbc181dacc25a83e SHA-256: ace56c947f605b6ec1bc74fbdc74b996f4e46e967133228d12c1c603e28ab25c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though heavily obfuscated, contains the URL for the malicious redirector. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document likely prompts the user to install a browser extension or update, a common social engineering tactic to facilitate malware installation or credential theft.

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=mahabali+hanuman+apnetv
    • http://files.thefrivolousfox.com/uploads/1/3/0/7/130775174/seromawesol_rogegu_wobevux_borozufaduvegix.pdf
    • http://files.bccupcakery.com/uploads/1/3/2/6/132695575/dimubige-sukulanele.pdf
    • http://files.kcpanhel.com/uploads/1/3/2/8/132815961/1055807.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/bibatixufajufepikomuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6317/2502/files/71966258549.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/68343498598.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/67245401011.pdf
    • https://cdn.shopify.com/s/files/1/0431/9766/1348/files/82305116486.pdf
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/jovorurog.pdf
    • https://cdn.shopify.com/s/files/1/0431/7963/8942/files/33089892229.pdf
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/86547981531.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/32397003505.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/witogirodijaburotij.pdf
    • https://cdn.shopify.com/s/files/1/0436/6771/8309/files/jelaroladimilesalos.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_off00007221.bin
77923014f753d5b6a1710d8b8d681b68834510d34fe772cfc4e317af97d6777f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7221 4760 bytes
font_01_sfnt_off00008223.bin
109120ffed32c4ca50721b7f1c98351d9a00a3dc24f5d8f767ed61a86fd2c472
pdf-font-stream PDF embedded font (sfnt) at offset 0x8223 9624 bytes
font_02_sfnt_off0000a2ca.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2CA 4324 bytes