Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf210c2b93f3d48…

MALICIOUS

PDF

36.0 KB Created: 2020-08-08 23:35:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 449c0373f73365255c338aebab44fc40 SHA-1: 17bdaf20876c7327a609b227a47f26899520753b SHA-256: baf210c2b93f3d4896bd78831844a25db99fd76680aab6cb0c8a17b1ffddbc1e
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, https://ttraff.cc/pify?keyword=antarrashtriya+vyapar+pdf, is flagged as a malicious redirector. The document body is heavily obfuscated but contains references to the URLs, suggesting a lure or redirection mechanism. The primary attack pattern involves leveraging these links for malicious purposes.

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=antarrashtriya+vyapar+pdf
    • http://files.robertstanhope.com/uploads/1/3/2/6/132682882/bedasizefasajej_nukirixav_gipud.pdf
    • http://foteji.mobainfo.com/uploads/1/3/1/4/131482853/wesibisifokowe.pdf
    • http://forexiwiv.rodolfoangeloni.net/uploads/1/3/2/3/132303035/wuselurufa-zosidobip.pdf
    • http://files.barefootguide.org/uploads/1/3/1/4/131454420/5297148.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0431/6830/1212/files/82605349269.pdf
    • https://cdn.shopify.com/s/files/1/0435/8147/2929/files/46030858687.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/antipyretic_drugs_name_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/77777549528.pdf
    • https://cdn.shopify.com/s/files/1/0431/7387/1767/files/bumoteperemuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/54370202961.pdf
    • https://cdn.shopify.com/s/files/1/0450/0871/5940/files/tableau_des_armatures.pdf
    • https://cdn.shopify.com/s/files/1/0431/4585/5137/files/14499040044.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/taridulozomoxekolakinuku.pdf
    • https://cdn.shopify.com/s/files/1/0438/4600/8982/files/homedics_back_massager.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/58816061964.pdf
    • https://cdn.shopify.com/s/files/1/0429/4007/2092/files/88737191897.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_off00004d58.bin
f1faa4d7a45d0d466b37c432b0090a30d06fba83b15cd040ccd6774b44aaffba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D58 5248 bytes
font_01_sfnt_off00005f3c.bin
c906a2226674f9421ea9c8e951578a89a310bf1f6ad76cae4dfc9cf1d08a8e73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3C 10168 bytes

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