Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee0396e9b3df6c3…

MALICIOUS

PDF

58.0 KB Created: 2020-08-14 21:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 731a5ac9186016e1ab9e32048987b1a6 SHA-1: ca22995078d4727eaaaadb4ebf9aa65c1bb053de SHA-256: cee0396e9b3df6c393af4eaa43779074124a3d95639f58b54c8ab59a7a47a39f
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to external resources, forming a link farm. One critical heuristic identified a link to a known malicious redirector, specifically 'https://ttraff.cc/pify?keyword=sadness+and+sorrow+piano+midi'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. The presence of a link farm further supports the malicious intent by attempting to obscure the true destination or to generate traffic.

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/pify?keyword=sadness+and+sorrow+piano+midi
    • http://files.thefashionanalyst.com/uploads/1/3/1/3/131383624/wezunawe.pdf
    • http://files.framemysore.org/uploads/1/3/1/3/131384789/7349004.pdf
    • http://durew.marisasiddiqi.com/uploads/1/3/2/7/132710773/jamokon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdf
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/fabakodudewitogewi.pdf
    • https://cdn.shopify.com/s/files/1/0445/4694/9279/files/perfect_modal_verbs_explanation.pdf
    • https://cdn.shopify.com/s/files/1/0445/3544/7711/files/avani_avittam_mantras_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0432/4252/0739/files/91067646675.pdf
    • https://cdn.shopify.com/s/files/1/0431/7659/1509/files/dezilatapanow.pdf
    • https://cdn.shopify.com/s/files/1/0440/6598/0581/files/wapakom.pdf
    • https://cdn.shopify.com/s/files/1/0427/8625/9100/files/45874865347.pdf
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/78422375507.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/vugozisabaruz.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007650.bin
4e1a9c4cb32f1bc4ff176ae4dc1460c31b2d267bf2def0252f23ad2731e7be72
pdf-font-stream PDF embedded font (sfnt) at offset 0x7650 6588 bytes
font_01_sfnt_off00008698.bin
1c9fe2e8076f1c37943fadf91af290456875c89b32729fdb34ab7577800eeb2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x8698 4380 bytes
font_02_sfnt_off000095f7.bin
4af1ace986e4d9f96280b0e238ce166dc8fc7f5bd6aa54de6c70ef615e95a1f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x95F7 4976 bytes
font_03_sfnt_off0000a6bb.bin
184483d7ca2ff5241dafac7ba3be25020e54d27114886231eef5ed1f450b2b29
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6BB 10392 bytes
font_04_sfnt_off0000ca45.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA45 4324 bytes