Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeae7c4ce8f3f058…

MALICIOUS

PDF

41.9 KB Created: 2020-08-08 13:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93216c69adadeb10b010ef3738cb7633 SHA-1: 38654b699623c0c28d58ff8bcff61c662f659764 SHA-256: eeae7c4ce8f3f058b45be492fdecb96872ec7c5d1368515b3d788c133acb924c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/wb?keyword=oedipus%20rex%20penguin%20classics%20pdf'. Additionally, it features a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to obscure the malicious destination. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

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/wb?keyword=oedipus%20rex%20penguin%20classics%20pdf
    • http://wekememej.dallingranch.com/uploads/1/3/2/6/132682883/2488419.pdf
    • http://files.greaterconcordinterfaithcouncil.org/uploads/1/3/0/7/130776562/mofupotunuragam.pdf
    • http://ranukesuv.villageofevansmills.com/uploads/1/3/2/7/132712358/5998647.pdf
    • http://files.rossmoynechihuahuas.com/uploads/1/3/1/6/131637374/264b70e1f.pdf
    • http://nagofik.katharoscatering2go.com/uploads/1/3/0/8/130814297/gawotokelusidazob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1010/5255/files/49987111812.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdf
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/genusovubede.pdf
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/command_prompt_shortcut_key.pdf
    • https://cdn.shopify.com/s/files/1/0428/3095/4655/files/nizam_al_mulk.pdf
    • https://cdn.shopify.com/s/files/1/0429/1287/4662/files/fmea_process_steps.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/56501092131.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/37761473473.pdf
    • https://cdn.shopify.com/s/files/1/0437/6697/2577/files/27194997917.pdf
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/naxedaxexa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/50048827170.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5637/files/wopujubinotolumi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/ruvijem.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/1/0431

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006554.bin
e37b93629369692be866727da56593fe98dbb059770246287851b1f9d67abfb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6554 5420 bytes
font_01_sfnt_off000077d0.bin
815f0e0c1d70b1a8a624ead821bee42b0362a58b301f19c215cffae220691bd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D0 10108 bytes

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