Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6dbf0f83726fd5e…

MALICIOUS

PDF

34.9 KB Created: 2020-08-17 09:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de317154748fb4927c20e94aa5f5b925 SHA-1: a9df7d31656c492121b8d40822c7ae1c9c9fc5ec SHA-256: f6dbf0f83726fd5e2138f5b4c3ebb7f39b9a037b4e97300f2f78266c68260a69
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a visible link to 'ttraff.cc', identified as a malicious redirector. The document body, though partially corrupted, mentions 'Carbonite addon' and includes the malicious URL, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy. The heuristic 'SE_LOLBIN_RUN_COMMAND' suggests that the document may also contain instructions for executing commands, potentially via PowerShell or similar tools, to further the malicious objective.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=carbonite+addon+3.+3+5a
    • http://zadoxu.meganrielmehan.com/uploads/1/3/0/9/130969191/f67fc1ba69f0.pdf
    • http://files.beasleydoodles.net/uploads/1/3/1/6/131606666/c2831.pdf
    • http://nejenox.amandagrahamlpc.com/uploads/1/3/1/4/131407300/nekoloxis.pdf
    • https://cdn.shopify.com/s/files/1/0434/0023/3123/files/49332053560.pdf
    • https://cdn.shopify.com/s/files/1/0430/1714/2433/files/nakeluxikiwe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9861/0591/files/background_information_in_greek.pdf
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/bexafetibosobidubonanil.pdf
    • https://cdn.shopify.com/s/files/1/0437/9472/7074/files/64936404884.pdf
    • https://cdn.shopify.com/s/files/1/0434/4853/3142/files/welivasanedipezixava.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4722/files/matiguponoriwasubak.pdf
    • https://cdn.shopify.com/s/files/1/0436/3563/8425/files/leisure_suit_larry_love_for_sail.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1673/files/19241310482.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/powershell_format_vscode.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/lomasopekijiweb.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bd8.bin
df837c4c25be8a6db23de6df46ac7b15be36c1b4eaa28e5a2362c16eac184d43
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BD8 4976 bytes
font_01_sfnt_off00005cd1.bin
523f9118922c7b874bb543266cf9d021607ea7b63601b1cf41ec8c5dabc2a0e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD1 9996 bytes