Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d053dc4b3ff6e97…

MALICIOUS

PDF

42.5 KB Created: 2020-08-28 00:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 074bd5c350922abb1c3cfaccf95af86b SHA-1: 6a793ec7e1bb36623f28b23f045ae1b399ce71fa SHA-256: 4d053dc4b3ff6e97eed67ae623b5a1df9e0aaf1f207a219c822a361d6c0540a6
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at `https://ttraff.com/pify?keyword=naruto+shippuden+episode+163+dubbed`. The document body, though heavily obfuscated, also contains this URL and other links pointing to external PDFs, suggesting a link farm or redirection scheme. The ML classifier strongly supports the malicious nature of this PDF.

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=naruto+shippuden+episode+163+dubbed
    • http://files.americasbluesmovie.com/uploads/1/3/1/3/131379639/guwelolul.pdf
    • http://gagone.daleshandmadesoaps.com/uploads/1/3/2/6/132695278/a73ff25536.pdf
    • http://xoneridi.braddykema.com/uploads/1/3/2/8/132816036/62595201613ac.pdf
    • http://reganola.dodlestonparishcouncil.co.uk/uploads/1/3/1/3/131380600/jimevizi.pdf
    • http://bisulab.3draddict.com/uploads/1/3/0/7/130776277/7575818.pdf
    • https://cdn.shopify.com/s/files/1/0433/4452/7511/files/66092972067.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/bakolurijatitusiveleru.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/is_morphvox_pro_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41841620016.pdf
    • https://cdn.shopify.com/s/files/1/0429/0255/2735/files/36427931128.pdf
    • https://cdn.shopify.com/s/files/1/0437/8211/1390/files/microsoft_access_mac_os_x_free.pdf
    • https://cdn.shopify.com/s/files/1/0465/4917/2382/files/penggolongan_obat_analgetik.pdf
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/33687772353.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/rimenukoguvetuwosudidux.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_off000059a1.bin
194ba805657dd439eb2730b206c61e56fff05697d765259fcb182bf2bd049acd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59A1 5376 bytes
font_01_sfnt_off00006bda.bin
f5c8c81c136e45129709430f142173ac7dd98e6ec0fe0e015e4de39aee4ad5a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDA 10240 bytes
font_02_sfnt_off00008ede.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDE 4324 bytes

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