Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9054d8ce0f083ba…

MALICIOUS

PDF

59.2 KB Created: 2020-08-31 09:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ff4edb96d0316f4a0982efd2ba8bee2 SHA-1: 0401b786126c872c794e81cdb52bdecf1a89ddad SHA-256: d9054d8ce0f083ba8ffab5f2e267b0b37756c55dd390ace2ce2c92d34b4f0c1b
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, with a critical heuristic firing indicating a PDF link to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.com/wix?keyword=importancia+de+las+reacciones+de+oxido+reduccion'. The document body, though heavily corrupted, also contains this URL, suggesting it is the intended lure. The presence of numerous other PDF links points to a link farm strategy to obscure the malicious intent.

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/wix?keyword=importancia+de+las+reacciones+de+oxido+reduccion
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/23477275789.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4504/files/bible_lds.pdf
    • https://cdn.shopify.com/s/files/1/0433/2473/5643/files/nojasufizojapofor.pdf
    • https://cdn.shopify.com/s/files/1/0465/4478/1462/files/17419891936.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7974/files/73670146367.pdf
    • https://static.usrfiles.com/ugd/685707_f4da9db71e0b4b56a09ea59d12b77ebf.pdf
    • https://static.usrfiles.com/ugd/01e791_66246209d1da46c8be66fb2f58752378.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb29977c52a348d393c4cc9969d8b762.pdf
    • https://static.usrfiles.com/ugd/87d215_0092a43ef84049a6958460d636f0f578.pdf
    • https://static.usrfiles.com/ugd/b8c837_fae215fcc8554218abf0cf5653c3ead0.pdf
    • https://static.usrfiles.com/ugd/d7ba0f_c9d5e67830c54f52b6019b48e9280614.pdf
    • https://static.usrfiles.com/ugd/b8c837_9af0223be4134b44aeaca6abddd61bdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_189ad59eae1f4411ac9b7abda0c0600d.pdf
    • https://static.usrfiles.com/ugd/b8c837_7eaab494c2c649598140e8a8cbc426e2.pdf
    • https://static.usrfiles.com/ugd/ace02d_48a61ea972af460180a224031b1cfb60.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_4be7fb27fb9e437db7df1e319dd05a99.pdf
    • https://static.usrfiles.com/ugd/c5d40f_5982e745bdac4431a9c4c889bb414b9a.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_off000087e9.bin
b41b2a3215d94b3350c94e204bcf8cee9e65a947d9f411ae7036c6efb3c97ecf
pdf-font-stream PDF embedded font (sfnt) at offset 0x87E9 5224 bytes
font_01_sfnt_off00009981.bin
f3915a712fe895c4c901f4255029dbd0c3c0a224991bd10122aa79c80cba2fcd
pdf-font-stream PDF embedded font (sfnt) at offset 0x9981 15232 bytes
font_02_sfnt_off0000c848.bin
6681debc8188742248b2ef07e2b364aa0547bf9998ff490abc2e3412dbbb7341
pdf-font-stream PDF embedded font (sfnt) at offset 0xC848 16148 bytes