Malicious PDF — malware analysis report

Static analysis result for SHA-256 32cbf9c7f4b599c8…

MALICIOUS

PDF

48.9 KB Created: 2020-07-30 08:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fe8f08755145095cf3e563ff92df2de SHA-1: 7436ef5d0fc921a65032706965aa5fba7e7ecffc SHA-256: 32cbf9c7f4b599c80eb0746d4ec9c718a2f07850c8a6f72de6914034916a815f
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to potentially malicious redirectors. The primary malicious URL identified is ttraff.com, which is known to host redirectors. The document body is heavily obfuscated and appears to be junk data, but the presence of the link farm and the malicious redirector strongly suggests a phishing or malware distribution 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.com/pify?keyword=anionic+polymerization+principles+and+practice+pdf
    • http://files.lbcf1689kjv.com/uploads/1/3/0/8/130814280/9913039.pdf
    • http://files.fremontclassof72.com/uploads/1/3/1/4/131453543/e3ff1d381e.pdf
    • http://files.forstinn.com/uploads/1/3/2/3/132303035/5962042.pdf
    • http://files.theblackribbonart.com/uploads/1/3/2/6/132683135/rizezawufuvaj_sibubob.pdf
    • http://files.room212productions.com/uploads/1/3/1/0/131069781/somofaf.pdf
    • http://files.theblackribbonart.com/uploads/1/3/2/6/132683135/riz
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/98585706931.pdf
    • https://cdn.shopify.com/s/files/1/0431/0476/4068/files/12424596831.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/75718692331.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/12367375525.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/nubigifutofejepi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/nitutufoxin.pdf
    • https://cdn.shopify.com/s/files/1/0438/7805/6091/files/jawegugufar.pdf
    • https://cdn.shopify.com/s/files/1/0429/3168/3484/files/89423778400.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/4186973270.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/gomamemawetewi.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_off00007be8.bin
dfe2928fb0202d3b9694fa97bcf7d8d61cab1471b13edee5376df7261d51659e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE8 5228 bytes
font_01_sfnt_off00008d98.bin
292d365460c8c7b812f35352248fc423b4cfaf4588af51b9e7eed462da1e89e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D98 12748 bytes

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