Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0e73d00f41dc2a6…

MALICIOUS

PDF

49.4 KB Created: 2020-08-08 07:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 889aaf35b0c89306dd2561a65ee6a4c6 SHA-1: 247f15df50097bd9477da1fba3eb3da089cce810 SHA-256: c0e73d00f41dc2a65add465334fb683bf3bf74b09c2e671f0cfb5524c4c82b53
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.ru/pify?keyword=livro+sobre+o+meio+ambiente+pdf', is designed to redirect users. Another heuristic indicates a link farm, with many links pointing to Shopify domains, one of which is also present in the document body. The document body itself contains obfuscated text and the malicious URL, suggesting a lure to download a malicious file or visit a phishing site.

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=livro+sobre+o+meio+ambiente+pdf
    • http://files.encorecarpetcare.com/uploads/1/3/0/7/130739542/kepajiduziva.pdf
    • http://files.mintaddition.co.uk/uploads/1/3/1/6/131636903/7175770.pdf
    • http://files.circleoflightmassage.com/uploads/1/3/0/7/130775441/zimusigobuxid-koropof-gevabez-bozesebosuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/nuwitetemalidebivor.pdf
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/how_to_marry_serana.pdf
    • https://cdn.shopify.com/s/files/1/0427/9877/6487/files/powabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/wizujumun.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/guxemovawuxim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wawufomujemozinabewa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7275/7670/files/44383153715.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/24622392042.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/41154162780.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4021/files/rudesetapafuko.pdf
    • https://cdn.shopify.com/s/files/1/0437/0975/9640/files/fifuduropuvasixi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071d6.bin
906cb2313301438eec2df3a09a1aa7165acc3258f54ef0e336550d9df6833b0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D6 5084 bytes
font_01_sfnt_off00008303.bin
149bb4919c350e0da99b8565f47a955291bff963bfbdc141b241e5bd534bcfde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8303 12528 bytes
font_02_sfnt_off0000a904.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA904 4324 bytes

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