Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6456d79483e8cf2…

MALICIOUS

PDF

49.5 KB Created: 2020-09-09 01:23:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e278323ff951a79dd9984728060891d SHA-1: fe23ad746f34d5fc643195ac7242e1a0bc08d4ce SHA-256: c6456d79483e8cf296856e4662381f22ab34663a1e3ea2895f50759ed31b315f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=sqlite+android+tutorial+step+by+step'. It also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The document body contains garbled text but also includes the malicious URL and several benign-looking PDF links, reinforcing the lure. No scripts were extracted from this sample.

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.me/wix?keyword=sqlite+android+tutorial+step+by+step
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdf
    • https://cdn.shopify.com/s/files/1/0439/4316/6107/files/54985707720.pdf
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/firefox_47._1.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/65910064509.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/bsc_agriculture_entrance_exam_model_question_papers.pdf
    • https://static.usrfiles.com/ugd/115d6e_481e61acbc7b4337b3d0aa97cb0ad058.pdf
    • https://static.usrfiles.com/ugd/fe83c3_eb22a82d63724e15856b08af67c8e0b3.pdf
    • https://static.usrfiles.com/ugd/9d869b_fff23555905d46138651a3f36dbf0c6b.pdf
    • https://static.usrfiles.com/ugd/ca32a8_e70d6351e86346fab329a6eb84f0e5cc.pdf
    • https://static.usrfiles.com/ugd/2813e2_4ac08d01f04b4346986c54e3dc7eef95.pdf
    • https://cdn.shopify.com/s/files/1/0432/6129/6790/files/44894530949.pdf
    • https://cdn.shopify.com/s/files/1/0431/0581/2633/files/extravasation_guidelines_esmo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/90674433093.pdf
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/react_native_component_lifecycle.pdf
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/72457958232.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_off00007556.bin
4c75445370f4c1b890a0b5531f3664eec162f0cb5c7396181f071d2357db0926
pdf-font-stream PDF embedded font (sfnt) at offset 0x7556 5424 bytes
font_01_sfnt_off000087d4.bin
e0d8c43f109af5d792b0b2773a76b694ade1a26e6bd6a9c0763b5872eb217c0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x87D4 15924 bytes