Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0672545c9c257cb…

MALICIOUS

PDF

48.7 KB Created: 2020-08-09 05:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 032fd47ef0ae0e2fb57d083129b3c12c SHA-1: a2ec0f0bddd16d67156bcab3f2323e7475ce5a67 SHA-256: d0672545c9c257cb5d2280c9e6e920f64e631a32f12cb3506b336a855c84f78e
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a document about Excel functions. This link, 'https://ttraff.com/pify?keyword=all+function+in+excel+2020+with+example+pdf', leads to a malicious site. The PDF also hosts a large number of external links, many pointing to Shopify, which is characteristic of SEO link farm abuse to obscure malicious activity. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=all+function+in+excel+2020+with+example+pdf
    • http://files.henkvantwillertandventodonorte.com/uploads/1/3/1/3/131383544/xebosaxuparaj_xatetiwidaju_jewigo_samebelek.pdf
    • http://files.thedestinationlab.com/uploads/1/3/1/6/131636665/1795643.pdf
    • http://bafugovog.akhalteke.cc/uploads/1/3/2/6/132695278/3dc72821955a6c0.pdf
    • http://files.mrquerino.com/uploads/1/3/2/6/132695575/7a9ad40542c422.pdf
    • http://files.royalqueendom.com/uploads/1/3/0/9/130968950/f29de6873.pdf
    • http://files.royalqueendom.com/uploads/1/3/0/9/130968950/f2
    • https://cdn.shopify.com/s/files/1/0434/5298/9607/files/behinderungsanzeige_vob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54341666742.pdf
    • https://cdn.shopify.com/s/files/1/0431/0866/3457/files/lovijivemidizekazoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4496/files/11267624727.pdf
    • https://cdn.shopify.com/s/files/1/0434/5882/2296/files/58376378246.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.pdf
    • https://cdn.shopify.com/s/files/1/0440/8436/3416/files/minecraft_rpg_servers.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4831/files/87171617823.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lavijado.pdf
    • https://cdn.shopify.com/s/files/1/0430/7438/8119/files/vexosizikalozopufosa.pdf
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/kakojuxanugiwesaxazutava.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4780083199.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_off0000708c.bin
171813a0d77fd6b15d8638f5eaa4c81858b5f6407f5c4afceb126b959547b781
pdf-font-stream PDF embedded font (sfnt) at offset 0x708C 5424 bytes
font_01_sfnt_off000082e4.bin
4111f1d8f93388fd618168eaad794285df457f9c78a825be942427ed02182cb5
pdf-font-stream PDF embedded font (sfnt) at offset 0x82E4 10532 bytes
font_02_sfnt_off0000a6f1.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F1 4324 bytes