Malicious PDF — malware analysis report

Static analysis result for SHA-256 24724dea07fea22b…

MALICIOUS

PDF

38.4 KB Created: 2020-08-18 14:58:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 765e212410dd59eeac2114f5f9d0a13a SHA-1: 6e9b82a34ad9d89646973a35e3660d990311d0e3 SHA-256: 24724dea07fea22b0d7ca69fbe442b0875930a64f5a6da83001099ecf79a2f7f
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Tableau public for windows xp' and a URL that appears to be a lure. The primary malicious URL is https://ttraff.cc/pify?keyword=tableau+public++for+windows+xp, which is likely used to redirect the user to a second-stage payload. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm designed for SEO poisoning or to obscure the true malicious destination.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=tableau+public++for+windows+xp
    • http://dilolomez.xtremesweets.com/uploads/1/3/0/7/130775732/zezutugebitigirojar.pdf
    • https://cdn.shopify.com/s/files/1/0428/7728/8611/files/nenafiginuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8535/files/51946945214.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/nivuwifasizu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/sem_microscopy.pdf
    • https://cdn.shopify.com/s/files/1/0440/6896/2469/files/70017856954.pdf
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/87758911152.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/dadofametenasigiva.pdf
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/83424159566.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/palliative_care_vs_hospice_care.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/jotomupeloti.pdf
    • https://cdn.shopify.com/s/files/1/0432/5353/0788/files/89573237136.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/2392318823.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_off0000577f.bin
5bbe60f8abd78ba03e147f9e74e073331ff27e9c35168f319382be3ee12a40c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x577F 5396 bytes
font_01_sfnt_off000069f1.bin
76951024613c50e941d12e8de21d5b8b0d665877cd38dbe509ef9ca91e19aaa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F1 10228 bytes

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