Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1eb3e28c5e3b6c3…

MALICIOUS

PDF

45.1 KB Created: 2020-08-04 11:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c7013ce8a4ca618f9bcb39e85378eb8 SHA-1: 7ce19628492f6538c39317e4e2cc5ac5ea1ac8b9 SHA-256: d1eb3e28c5e3b6c3e23fa541ecd9fca13de0c50dc9ec5fce55487b981a47bb1d
130 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that this URL is part of infrastructure used for malicious redirection. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the document is designed to host numerous external links, likely for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=alphabetical+order+and+miscellaneous+series+pdf
    • http://files.orangeblossombooks.com/uploads/1/3/1/6/131606798/4348990.pdf
    • http://files.christchapelmaine.org/uploads/1/3/2/3/132303075/foxigitodatipup-budosasap-dutameg.pdf
    • http://files.unbarbadosandoecs.org/uploads/1/3/1/1/131164046/3995283.pdf
    • http://files.benjamincraig.org/uploads/1/3/1/4/131483020/4583910.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/lajepegove.pdf
    • https://cdn.shopify.com/s/files/1/0433/2814/3510/files/zakonosagejaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/fopafikutujogagaxubelekil.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/18757159375.pdf
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/true_strike_cantrip.pdf
    • https://cdn.shopify.com/s/files/1/0432/4504/3876/files/61528845761.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/nigagujoga.pdf
    • https://cdn.shopify.com/s/files/1/0436/0300/1502/files/42751891283.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/62805327650.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/buwaloriximigemojupubaxil.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/japoxotoruzub.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/12103354100.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_off0000583a.bin
b7b852ace1c8f471a0967ddbc0b66e016dbb2555019a4e47f25d3475f6280882
pdf-font-stream PDF embedded font (sfnt) at offset 0x583A 5524 bytes
font_01_sfnt_off00006acc.bin
cbe33798ff87173870f52d1cba8dac4d8f24581f044021a34141a01373700a78
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACC 10400 bytes
font_02_sfnt_off00008e62.bin
63021b88d3c29d861422537119efaa9df63fd03731455ca8a0944cad28d255ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E62 17064 bytes