Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a023256ebd20cf3…

MALICIOUS

PDF

37.2 KB Created: 2020-08-15 16:44:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6590039dbf268e39d9118c971a98935 SHA-1: d7040fcd08bae573982d3e474668d036086110b2 SHA-256: 1a023256ebd20cf31f67a6d65c6c44c5a27ec68c0e70110b87e65e661f83f44c
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=bagpipe+sheet+music+for+itchy+fingers', is designed to redirect users to malicious content. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation to obscure the malicious redirector. No scripts were extracted, but the presence of the malicious redirector and the link farm structure strongly suggests a phishing or malware delivery attempt.

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.cc/pify?keyword=bagpipe+sheet+music+for+itchy+fingers
    • http://mugisiw.ironmenfootball.com/uploads/1/3/1/4/131438641/ramolitizetijaxew.pdf
    • http://files.elvirabasevich.com/uploads/1/3/2/6/132695865/votaxuxarox.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/46504537993.pdf
    • https://cdn.shopify.com/s/files/1/0446/9823/9132/files/picadora_de_pasto_casera.pdf
    • https://cdn.shopify.com/s/files/1/0431/0450/1922/files/management_12th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vukanuzedatijaxugevune.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/50209787474.pdf
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/8331166215.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/wizareta.pdf
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/ibm_websphere_application_server_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.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_off00004528.bin
4d5c1540b7c3b2ae4b55ee4d00b94bf951aff6fac552e9e373e78d46198c4b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4528 5428 bytes
font_01_sfnt_off00005783.bin
e920c66765b639cfbde7b97bb872861ccfbf69e5ef1cc4b459e1889b647a4349		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5783 10180 bytes
font_02_sfnt_off00007a18.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A18 4324 bytes

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