Malicious PDF — malware analysis report

Static analysis result for SHA-256 d929fdb5b3841653…

MALICIOUS

PDF

44.9 KB Created: 2020-09-09 20:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d389d525802de2efb060233fd301f676 SHA-1: 6abcc8683f47e18e6036e12c7950be836de39ea2 SHA-256: d929fdb5b38416531b159419eac5990ee150b262d7bbd9cc9a67145f63ea3e73
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to fonts and includes the primary malicious URL. The presence of a download button lure further supports the social engineering aspect of this attack. The file likely serves as a lure to redirect users to malicious sites.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/wix?keyword=asterism+clean+font+free
    • http://files.goodfaithfarmmd.com/uploads/1/3/1/0/131070911/vujijewuwukexegukug.pdf
    • http://ligewal.us-history.net/uploads/1/3/2/8/132814194/7578477.pdf
    • http://files.artisansbycj.com/uploads/1/3/0/8/130874154/5131921.pdf
    • https://static.usrfiles.com/ugd/234f58_9a0b6bca960c4269a983015aaf918b3b.pdf
    • https://static.usrfiles.com/ugd/b88e3d_1f15716d02f744ac8e773c37fae2f514.pdf
    • https://static.usrfiles.com/ugd/aff7ca_96c5cc5b49594eb1870d984b4dbfdabf.pdf
    • https://static.usrfiles.com/ugd/87d215_ae144de964f74562b5ad41dbef2cbec5.pdf
    • https://static.usrfiles.com/ugd/205ae4_f37e12799c4a40f087578a748923f18e.pdf
    • https://static.usrfiles.com/ugd/9ea91e_bf38532586514a91a2172091a0f7d3b9.pdf
    • https://static.usrfiles.com/ugd/7a11b0_62c839042c7a4b80919943cdad18e819.pdf
    • https://static.usrfiles.com/ugd/e73fea_20b3d48d2f8c4db5b5b6cbb73b1f1f19.pdf
    • https://cdn.shopify.com/s/files/1/0428/9573/6988/files/76684758855.pdf
    • https://cdn.shopify.com/s/files/1/0430/3775/3493/files/80813057670.pdf
    • https://cdn.shopify.com/s/files/1/0432/9593/2574/files/venepegadav.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/11649442674.pdf
    • https://cdn.shopify.com/s/files/1/0432/2384/2983/files/robe_of_the_archmagi_pathfinder.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_off00004f5c.bin
1f3994e6e93dbaf1018e5af9663ef73dfec30e175b5b57043b6d49067c11c722
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F5C 5016 bytes
font_01_sfnt_off00006054.bin
b074a6623f8f62d5826b1251dfd35552250de732ca12370504d9ecb5e148eaaa
pdf-font-stream PDF embedded font (sfnt) at offset 0x6054 13704 bytes
font_02_sfnt_off00008cd5.bin
6508a250cc05224a4ff8b1fb6a7987e1a1bb646675127c16c68468cac5cc3d73
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD5 17412 bytes