Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3f22ee5d9e086b4…

MALICIOUS

PDF

45.2 KB Created: 2020-09-19 11:22:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01ceed89d86379716ef4a92499e19c8d SHA-1: b5cb975ddf442ed17efd0b4565e59545017edf25 SHA-256: d3f22ee5d9e086b4dd1965fa195b466d913f0ef6426e59eea8ead6ff5e40c950
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body and heuristics indicate a lure for a password-protected archive, suggesting a multi-stage attack. The primary malicious URL is ttraff.ru, which likely serves as a gateway to further malicious content.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/wix?keyword=evony+advanced+guide
    • http://files.nurturedinjoy.com/uploads/1/3/2/6/132695372/9056b206b1beac.pdf
    • http://meronu.celebrationcroquet.com/uploads/1/3/1/4/131454549/winaxu.pdf
    • http://files.skylikesnow.com/uploads/1/3/0/7/130738619/848ad9654adb.pdf
    • http://kejikulu.travisfootball.com/uploads/1/3/0/7/130775169/gobuxogenogoxolefe.pdf
    • http://files.circuscascadia.org/uploads/1/3/0/7/130775727/e055575018533d.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/72897895654.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2981/files/finiv.pdf
    • https://cdn.shopify.com/s/files/1/0443/8881/0918/files/a_keyholder_s_handbook_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/kijewarar.pdf
    • https://94eeeae4-1297-418c-a3d0-75e0457cc842.filesusr.com/ugd/79cb75_fa8b6dec4857490cbbd77750b2de41b6.pdf?index=true
    • https://e68d633b-55d7-4218-b045-55993e06994b.filesusr.com/ugd/c4dbd3_edbb811ea8d840d895f56146ddd2799f.pdf?index=true
    • https://61c0dd5f-5ee3-450f-af1b-176bdfd2ff1f.filesusr.com/ugd/b910ae_c7f9c042f6e9409f8e4e609fe4b4e554.pdf?index=true
    • https://c5a37c0e-a7b5-4f57-9981-2b4a9117a985.filesusr.com/ugd/227d0f_c78f8a6bbde64fb3bc62cd5a5a6838f3.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0434/8297/2326/files/noxifutupuvosumij.pdf
    • https://cdn.shopify.com/s/files/1/0434/0636/0730/files/merge_files_mac_os.pdf
    • https://cdn.shopify.com/s/files/1/0440/7256/6936/files/tumblr_video_er_iphone_app.pdf
    • https://cdn.shopify.com/s/files/1/0437/6399/0686/files/xeser.pdf
    • https://cdn.shopify.com/s/files/1/0429/4819/8556/files/counting_worksheets_1-_50.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000733d.bin
a0984c4ba15e2142c7cd2fbccb72bc99268771534646aa3031841c522a4f9e54
pdf-font-stream PDF embedded font (sfnt) at offset 0x733D 4920 bytes
font_01_sfnt_off00008428.bin
4960d4e50cc6e966851bf127c39396890c98d7c3a5f74c0ab01312d5bcea44d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8428 10540 bytes