Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fc475aa65d11845…

MALICIOUS

PDF

45.4 KB Created: 2020-08-12 12:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9022c8f9a1bc9b149a44592c7e9d943a SHA-1: 63d8666bf2e9ce3138ffa39f91e9a72ed216e828 SHA-256: 3fc475aa65d11845b3870b4f050eb0d7d5b81651634901eadc89262ace9bf9c0
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is the primary indicator of malicious intent. It also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The document body, though heavily obfuscated, contains the malicious URL and other embedded links. The attack pattern involves luring the user through deceptive content and links.

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=irrational%20exuberance%20summary%20pdf
    • http://sinif.plumasearthdays.com/uploads/1/3/2/6/132680932/filesekaja.pdf
    • http://files.sandeebrown.com/uploads/1/3/0/8/130874075/nokajirafivulis.pdf
    • http://vizipe.hackettville.com/uploads/1/3/2/7/132710621/mavob.pdf
    • https://cdn.shopify.com/s/files/1/0435/8006/3903/files/bio_rad_lyphochek_assayed_chemistry_control_values.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1569/files/cevisa_chp_12.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/noguvusagoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0050/4217/files/73999196263.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/xikakilibekawinuruzam.pdf
    • https://cdn.shopify.com/s/files/1/0440/1335/5166/files/lafodeziwenemefaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/ffxi_gil_farming_2017.pdf
    • https://cdn.shopify.com/s/files/1/0440/8626/3960/files/wapekokolotazaka.pdf
    • https://cdn.shopify.com/s/files/1/0430/8815/0690/files/noxinekitetilunerufa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/metegemekipezafekude.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_off00007294.bin
59eac80a32971e45a94511aac0a843c48c91427845dd139721b6436d2f557c14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7294 5548 bytes
font_01_sfnt_off0000855a.bin
aa7f68fb29e4f5ddedb8cf45fee0e3e39e3aaad3454d22fc99e1906bfd8207f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x855A 10412 bytes

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