Malicious PDF — malware analysis report

Static analysis result for SHA-256 acca5ee9b2bdb752…

MALICIOUS

PDF

45.5 KB Created: 2020-08-20 13:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75794e0c7da03adaee0ec00fa6080bfd SHA-1: 79c7e8bf4504a29093d80768a8da1bdc0b5c6575 SHA-256: acca5ee9b2bdb7522c714bb305eeeb09385aa7893da86a1bdf3f3c923ec79ed5
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links, 'https://ttraff.cc/pify?keyword=rap+albums+2018+free', is flagged as a known malicious redirector. The document body itself is heavily obfuscated and contains junk data, but the presence of this malicious link and the link farm heuristic strongly suggest a malicious intent to lure users to harmful content.

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=rap+albums+2018+free
    • http://dajagaf.deliciousdesignsbysherry.com/uploads/1/3/1/3/131379362/04c840d61b0.pdf
    • http://pepugafa.disruptivenewyork.com/uploads/1/3/2/8/132816036/d2a0ef3a257b.pdf
    • http://files.silasclifford-smith.com/uploads/1/3/0/7/130775002/6030341.pdf
    • http://files.unnatilok.com/uploads/1/3/1/8/131871994/dodojozo.pdf
    • http://files.mrsbisgaard.com/uploads/1/3/1/6/131607522/cff6aedc768a9.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2616/files/jemen.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87664315042.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5823/files/suxugudevusonurap.pdf
    • https://cdn.shopify.com/s/files/1/0430/9050/9977/files/75330445706.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5739/files/nigiwazuvipuzanefa.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/sap_bpc_420_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/0011/7928/files/devawo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5713/6294/files/67788096107.pdf
    • https://cdn.shopify.com/s/files/1/0436/4809/0272/files/29025348737.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_off00006652.bin
7893edda4dcb9479eca07e759e373ef3b616aa4bbf5237efc4536569b75656d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6652 5252 bytes
font_01_sfnt_off00007821.bin
0a1a87ce21faf204e264c4f5d88f5c09ff6de787959917570bb936ea7acce515		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7821 10276 bytes
font_02_sfnt_off00009b4a.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4A 4324 bytes

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