Malicious PDF — malware analysis report

Static analysis result for SHA-256 94c91529fd9fed37…

MALICIOUS

PDF

46.7 KB Created: 2020-08-01 02:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52f84a745f89218a88cef7ea74368262 SHA-1: 86e63fcc404a49ac708083e15194ab98a555ab62 SHA-256: 94c91529fd9fed3747dfd70382b133ac07c772f20a6cffd1d8e5730296b42ee7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a known malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=edimax+ew-+7811un. The document body appears to be obfuscated or corrupted, but the presence of numerous links and the critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK strongly indicate a phishing or redirection attempt.

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=edimax+ew-+7811un
    • http://files.narrativeimaginings.com/uploads/1/3/1/3/131379894/312cb194f8e.pdf
    • http://files.empressanjahlapromotions.com/uploads/1/3/2/6/132695194/5276175.pdf
    • http://files.jlsnaps.com/uploads/1/3/0/7/130776042/1ec588ba97.pdf
    • http://files.fosterhomestead.com/uploads/1/3/1/3/131380786/5306625.pdf
    • https://cdn.shopify.com/s/files/1/0436/2059/7923/files/69915019838.pdf
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/73814481421.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/lesofewimamejozux.pdf
    • https://cdn.shopify.com/s/files/1/0432/6621/2003/files/mipujabomepodiperekibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5598/8387/files/bokopukijobusemuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/78114793226.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/81756727696.pdf
    • https://cdn.shopify.com/s/files/1/0435/9992/1315/files/91497164283.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/wotlk_tailoring_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/5122/1146/files/93812918256.pdf
    • https://cdn.shopify.com/s/files/1/0434/0937/5383/files/95135009252.pdf
    • https://cdn.shopify.com/s/files/1/0432/0319/9136/files/rizimawosupejewit.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_off00007670.bin
4ec364efa1e912a0f619c90aec5eaf3b70c6a1d2c8088f9a2b487eed6dd542c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7670 5140 bytes
font_01_sfnt_off00008805.bin
683e54c7dddabc7ee805817792d175e798c80f45e6bfa63f076d01cf0c0d2f12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8805 10840 bytes

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