Malicious PDF — malware analysis report

Static analysis result for SHA-256 8283b625f348854e…

MALICIOUS

PDF

34.3 KB Created: 2020-09-10 21:53:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00f3a5254281dca35a141cd3d2c0f14b SHA-1: 96ee4bebd970f77e08012e2576a3d68eec498859 SHA-256: 8283b625f348854ea2d2f6c2d7e0316bde5cecd49a679f9b3d34b0e6337ed6f5
152 Risk Score

Malware Insights

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

The PDF contains a high number of external links, many of which point to suspicious domains. One critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though malformed, contains text related to 'nsw health immunisation register template' and includes the malicious URL, suggesting a phishing or scam attempt. No scripts were extracted from this sample.

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/wix?keyword=nsw+health+immunisation+register+template
    • http://files.ljohnsonlab.com/uploads/1/3/1/1/131163533/foludog-ligojukexif-voxosup-valufasaxa.pdf
    • http://files.mungerink.com/uploads/1/3/2/7/132710654/betegasewi_mopifijog_wajajufe_goxet.pdf
    • http://files.wolfetonesboston.com/uploads/1/3/0/8/130874122/goreviz.pdf
    • http://lepeporo.urbanedenbeauty.co.uk/uploads/1/3/1/4/131413418/5711969.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0319/files/alimentos_transgenicos_en_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0431/9703/8756/files/simplicity_sewing_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/zowutuxiziruro.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/29373126454.pdf
    • https://cdn.shopify.com/s/files/1/0432/2023/8503/files/86525913390.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8036/files/armitron_wr330_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4460/9943/files/38436465489.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4c5e787f2bd47cd926fb14535470c8c.pdf
    • https://static.usrfiles.com/ugd/3b47cb_76d35dbc1104464b80a45af601148c80.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_off0000493f.bin
eab770db3b6efba75a4cb6856652c1803b40bc302302b63a3606b3b429e1dfe3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x493F 5292 bytes
font_01_sfnt_off00005b2a.bin
5f22d4609ffcb43f16331577ffa5770322d7dda096f72d47c86f7c057aba5655		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2A 9676 bytes

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