Malicious PDF — malware analysis report

Static analysis result for SHA-256 36a932d96ed509b9…

MALICIOUS

PDF

40.0 KB Created: 2020-08-08 02:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7765348a1cea7b8627eef7dd162bb2e7 SHA-1: d9fafc2061414efd72a23f0411d47a3b0dc2bd7c SHA-256: 36a932d96ed509b95a4684487b7887940f14590a74730eece70758cbb893a9af
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects through ttraff.com. This indicates a link farm or redirection scheme designed to lead users to malicious content. The document body, though heavily obfuscated, contains the text 'Chemistry class 11 formula sheet pdf' and the malicious URL, suggesting a lure to trick users into clicking the link.

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.com/pify?keyword=chemistry+class+11+formula+sheet+pdf
    • http://menokete.nourishthesoul.me/uploads/1/3/1/4/131437601/88ade5a.pdf
    • http://tivegof.christiesbeachbowls.com.au/uploads/1/3/2/7/132710621/vituxisadimud.pdf
    • http://files.brunogoeseverywhere.com/uploads/1/3/1/3/131381640/ropejofozakomon.pdf
    • http://files.originalsavage.ca/uploads/1/3/0/8/130874330/8105bc89bc.pdf
    • https://cdn.shopify.com/s/files/1/0440/1784/4382/files/15837109983.pdf
    • https://cdn.shopify.com/s/files/1/0428/7361/8599/files/37220107556.pdf
    • https://cdn.shopify.com/s/files/1/0431/0981/0343/files/78354307701.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/15004274343.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lamafavikunidamekisuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/girokupoteki.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/leatherworker_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/25876256483.pdf
    • https://cdn.shopify.com/s/files/1/0438/1245/4560/files/36150357210.pdf
    • https://cdn.shopify.com/s/files/1/0437/8787/8549/files/68847255964.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_off00005e7d.bin
2ee483934a971ba2390c52ec781b0f623fd3a2d5ac8209c2a11a4fc633e3766c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7D 5452 bytes
font_01_sfnt_off000070e7.bin
48db57163cf5e670341ff09f6691bcadfcbfd3a1c2d00fd8a10b1f9eed762977		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E7 9968 bytes

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