Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f84eff2c236cf06…

MALICIOUS

PDF

44.6 KB Created: 2020-08-18 14:21:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adacf5c9090d337c516f4f0fa7db6266 SHA-1: 268daf420e1f3aa6922b07f758f308b5ffcef746 SHA-256: 3f84eff2c236cf06f7e67f1772d6cf2e2d6194069bb11593363850aa7f70387c
160 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a link farm hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results. One critical heuristic indicates a direct link to a known malicious redirector, ttraff.cc, which is used to serve the 'battlefield bad company 2 apk data mod' lure. The document body, though heavily obfuscated, contains the same lure and the malicious redirector URL. The presence of a 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests that the user might be prompted for a password, likely to bypass security scanning for an archive or attachment, further indicating a malicious intent to deliver a payload.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=battlefield+bad+company+2+apk+data+mod
    • http://files.jenniferfolsom.net/uploads/1/3/2/6/132695325/e4689ae.pdf
    • http://lewemavug.kingsquidjigs.com/uploads/1/3/2/6/132682989/wubalikuzeragexuz.pdf
    • http://files.winchmorehillbaptistchurch.org.uk/uploads/1/3/2/6/132683334/5089125.pdf
    • http://pegosedof.finleydesignart.com/uploads/1/3/1/6/131606183/3097938.pdf
    • https://cdn.shopify.com/s/files/1/0432/1135/8369/files/look_back_in_anger_john_osborne_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7373/1741/files/37017108376.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/36635273428.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/truck_transporter_game.pdf
    • https://cdn.shopify.com/s/files/1/0432/6231/2616/files/91638599089.pdf
    • https://cdn.shopify.com/s/files/1/0430/9902/9655/files/tilimagubokunewufovudusum.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5879/files/aromatherapy_essential_oil_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/air_cargo_manifest_format.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/pdf_to_excel_converter_software_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/52271497003.pdf
    • https://cdn.shopify.com/s/files/1/0429/6635/2028/files/49951486223.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/52453900819.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/59782367098.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_off000059b5.bin
3374cae535d80432447f0f7b74f92ee7102a1fcfd203153dde5db5ee330fb751		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B5 5512 bytes
font_01_sfnt_off00006c6b.bin
933487f2cc7f0f6039e5afd42ef8d92983bfb5d38d8919525ff4e6bfc0425602		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6B 10144 bytes
font_02_sfnt_off00008f73.bin
eccfb05c333878baa727456f71c9abe47543d8e4c26404896aa09cdf3457333c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F73 16172 bytes

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