Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c4fc0374c029171…

MALICIOUS

PDF

45.8 KB Created: 2020-08-30 06:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba8f721ad546173f6bdc9c25e7876855 SHA-1: 6c28ee3822b15ff69dd28077474d7fcdafd78da0 SHA-256: 3c4fc0374c0291713fc4dffbb3fdd9079e0fd1999d36d6fe6386ae8c75049acd
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to a URL associated with malicious activity. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The primary malicious URL identified is https://ttraff.cc/wix?keyword=cheap+go+pro, which is presented as a lure for a "cheap go pro". No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=cheap+go+pro
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/75867854946.pdf
    • https://cdn.shopify.com/s/files/1/0432/2125/4312/files/39736670904.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9120/files/belarus_tractor_parts.pdf
    • https://cdn.shopify.com/s/files/1/0433/2368/7067/files/77115704298.pdf
    • https://static.usrfiles.com/ugd/b8c837_f2a30a9a72904156b09b47f6b151624a.pdf
    • https://static.usrfiles.com/ugd/d775a9_6e405101f2ec4308bab723e479e761db.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e6028287d0e476e80f2e59dde7dd58e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d64aeb2fd244f58acb219daefbb57bf.pdf
    • https://static.usrfiles.com/ugd/41a0b6_067bf7a94af248c6bb1be9c1bf0e73a9.pdf
    • https://static.usrfiles.com/ugd/c836c3_f03b03d0047d45df9e3be93e94d53990.pdf
    • https://static.usrfiles.com/ugd/eb5a6a_84bcfcdaeb344761abfefb39d8947696.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cf667b027d048ed83fedcfa84e3f7d2.pdf
    • https://static.usrfiles.com/ugd/e2c250_340de963a2444395ada234690baf03a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_9484169f27cb4bb9ba43388afdc33d1b.pdf
    • https://cdn.shopify.com/s/files/1/0431/1174/3639/files/drivers_for_gravostyle_98.pdf
    • https://cdn.shopify.com/s/files/1/0462/7755/8432/files/42708441314.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/teboxozebogarekapuludu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/luxewizubotozeb.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_off000069db.bin
18e796d9111784e4a4f5f364191b204a77ca15ef273c6c248d801e19ad871e49
pdf-font-stream PDF embedded font (sfnt) at offset 0x69DB 4448 bytes
font_01_sfnt_off00007903.bin
7e7dc97cc8708646963de424d4ecb7186dd3cb9661c66f35122014d49e13124c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7903 10524 bytes
font_02_sfnt_off00009c84.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C84 4324 bytes