Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f4803d5824c3e7…

MALICIOUS

PDF

62.7 KB Created: 2020-08-31 11:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f55497393cbcdce0b7a6176e50712337 SHA-1: 374f8b3de1bccc0b09e56a40faf0122711f8cfa2 SHA-256: c0f4803d5824c3e73830eb1f145439cb563094faa2924e773c06262796ebcef8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is presented in a way that mimics search results, suggesting a phishing or malware distribution lure. The document also contains a high heuristic for a password-protected archive lure, indicating a multi-stage attack. The presence of numerous external PDF links, while many are benign, contributes to the overall suspicious nature of the document, potentially as part of a link farm or SEO manipulation to obscure the malicious intent.

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.com/wix?keyword=shiv+bhola+bhandari+song++320kbps
    • https://static.usrfiles.com/ugd/eb6612_be4abd5e55e0432ca846c948be93d17d.pdf
    • https://static.usrfiles.com/ugd/5438e3_34efb510e4dd46d7a343a1d417b27aff.pdf
    • https://static.usrfiles.com/ugd/8b49c6_511add945bd9406685124515027559ea.pdf
    • https://static.usrfiles.com/ugd/6290de_fd882862d1b54647abbc275472c1a992.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_8dd8a87a9ca347c0a6ecbeef01651900.pdf
    • https://static.usrfiles.com/ugd/f65518_9e70637b353a49669a4421771bbf9911.pdf
    • https://static.usrfiles.com/ugd/9421c8_5799d64d0f574468801c12e2baeee0aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_b59318d26f454559aaf0595054b530e0.pdf
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/ignou_assignment_submission_cover_page.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30549310566.pdf
    • https://cdn.shopify.com/s/files/1/0450/7149/9416/files/vupiwejutugefi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5501/3275/files/gelenatom.pdf
    • https://cdn.shopify.com/s/files/1/0463/1858/3973/files/smite_twitch_rewards.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_off00009a48.bin
0a213eded1d0f0001391168cf4470514238c8f6d36c01c7f1fbc62249726b13e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A48 6028 bytes
font_01_sfnt_off0000aeb8.bin
6085ea3ee3c343db1078ac57e6962f2fa6074e84e4949f70f6313325bb76fc88
pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB8 15548 bytes
font_02_sfnt_off0000df5e.bin
9486d12584b95f6157b019bc429339aee3263435450f2fe0dd35ac4b8a4f9c65
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5E 3568 bytes