Malicious PDF — malware analysis report

Static analysis result for SHA-256 f88697f4ab3fbda0…

MALICIOUS

PDF

45.9 KB Created: 2020-07-31 15:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e41356b3b041875d6bdb71c3970633b SHA-1: 78e53a99a9ffb1ea3b60dad88056767c68df5bc8 SHA-256: f88697f4ab3fbda06c433eee9deb9c4677940bceb648c9b8faa2b13bbc179aa2
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=manual+j+pdf', is flagged as a malicious redirector. The document body is heavily obfuscated, but the presence of numerous links suggests a lure to external malicious content.

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.ru/pify?keyword=manual+j+pdf
    • http://files.dogwooddoodlebugs.com/uploads/1/3/1/4/131406843/307724.pdf
    • http://files.reconnect2self.com/uploads/1/3/0/9/130969573/koselegi_puxododuzumatod_xijefebofuwem_gepeguzi.pdf
    • http://files.eletricat.com/uploads/1/3/0/8/130874676/vinotemamodavu.pdf
    • http://files.livelovelaf.com/uploads/1/3/0/7/130740517/cf80b8351280b5.pdf
    • http://files.livelovel
    • https://cdn.shopify.com/s/files/1/0430/0744/3103/files/didototoxoveza.pdf
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/38192116107.pdf
    • https://cdn.shopify.com/s/files/1/0429/6258/3711/files/58249518708.pdf
    • https://cdn.shopify.com/s/files/1/0428/9649/0655/files/26459342676.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdf
    • https://cdn.shopify.com/s/files/1/0430/4486/4149/files/60439712408.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/55306893127.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/jevoguwenudifuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/69989766309.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/faxijafijarutekilir.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3481/files/77076076736.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_off00007863.bin
f1a8563507d33cbe25a6244060966c049cfb74025a336c9cf07fa90622de503b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7863 4368 bytes
font_01_sfnt_off00008742.bin
fa9f47e8a91f2180019183cb2078f91c75c1226873217e1f3143a5ee62bbd0a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8742 10504 bytes

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