Malicious PDF — malware analysis report

Static analysis result for SHA-256 34653c33f38194db…

MALICIOUS

PDF

54.5 KB Created: 2020-09-12 16:40:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f568ac9987f99bcac3ccf22051f41e9 SHA-1: 1ec931f1d149ffc65e31a658846b309aaf216129 SHA-256: 34653c33f38194dbe00fe98101d32ac2c7de241af6efcda5403d4a024aa3fea0
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which are hosted on static.usrfiles.com, suggesting a link farm designed to attract traffic. The presence of a visual download button lure further supports a malicious intent to trick the user into clicking the link.

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.me/wix?keyword=al+quran+bangladesh+free
    • http://files.texasthundercloggers.org/uploads/1/3/0/8/130813524/bofifuvowumusud_bikoxit_bexujuxufuxa_movewaselerozub.pdf
    • http://rafabun.oneworldcircus.com/uploads/1/3/2/7/132710714/3851081.pdf
    • http://files.angelinternationalmanagement.com/uploads/1/3/1/4/131453636/39541ee40c7e.pdf
    • http://wavat.suerundlehughes.com/uploads/1/3/1/4/131454065/valexubo.pdf
    • https://static.usrfiles.com/ugd/8b97dd_b77f185e3fe346368491b9b1418f2910.pdf
    • https://static.usrfiles.com/ugd/3be3a7_56cdbadb0b7a42c99a97c673dc252a35.pdf
    • https://static.usrfiles.com/ugd/18122d_8552dab437514f9588f0b35647089f8b.pdf
    • https://static.usrfiles.com/ugd/69b86f_67de115538c94e5f9007e52c569901dd.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/73081535464.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/54574539727.pdf
    • https://cdn.shopify.com/s/files/1/0439/3828/3678/files/tebovixovel.pdf
    • https://static.usrfiles.com/ugd/77941b_627ef1f37f1a41fea29c4afb2f321c2c.pdf
    • https://static.usrfiles.com/ugd/70094d_628b63a1b0ae48d4a9c698236f327c8c.pdf
    • https://static.usrfiles.com/ugd/fedf23_e2bc8dd807374d6e80c3279f16ac44a8.pdf
    • https://static.usrfiles.com/ugd/417718_46330dcd89da4c149e91a12ab987cd6e.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_off000062cb.bin
e6e4def59e595fe528dee6d01bae0bda4ccba89c09075942f51a024c0e126f26
pdf-font-stream PDF embedded font (sfnt) at offset 0x62CB 5424 bytes
font_01_sfnt_off00007526.bin
49f024621d778ad3f05ca1f61cb783ec6a9753e93dcbd0617f3bdaf3e1422065
pdf-font-stream PDF embedded font (sfnt) at offset 0x7526 14508 bytes
font_02_sfnt_off00009f95.bin
e3ec68d47fda3a02284b795cb278f91fdb6d11edabef1dd1aa7d7dda942a6e9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F95 14464 bytes