Malicious PDF — malware analysis report

Static analysis result for SHA-256 d15b18ae01ea4d33…

MALICIOUS

PDF

40.2 KB Created: 2020-08-26 22:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ace5fb11ce7e2404725a80dbd0064b62 SHA-1: e520d4e929f7ca3ec24f16358a0f01a4b7c815d3 SHA-256: d15b18ae01ea4d333f16560c505ba3dc01234f3a6ecfb2f92e657189b67e00d3
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'firmware download' and a URL that is also flagged as a malicious redirector. This suggests the document is designed to trick users into clicking the link under the guise of a software update, leading them to malicious infrastructure.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=r4+upgrade+revolution+for+ds+ndsl+nds+firmware+download
    • http://fudipo.lawrencequill.com/uploads/1/3/1/0/131069934/1bff4c9faf22.pdf
    • http://files.shopnorae.com/uploads/1/3/1/3/131379301/kixejaz-sazogoze-kimuziletowero.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3388/files/anthem_of_the_seas_ship_information.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/negagopogazo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7111/0308/files/golongan_obat_antijamur.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/83613108241.pdf
    • https://cdn.shopify.com/s/files/1/0465/3550/8126/files/carbon_fiber_sheets_cost.pdf
    • https://cdn.shopify.com/s/files/1/0440/5297/1685/files/rogers_commission_report.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/airport_reef_bali_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/tudixotuxelatovidivo.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_off00005ce4.bin
f8c3c63431941e215d271a3ebc88a762831ae6ec389c1dfc330c02d37ed01dfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE4 5608 bytes
font_01_sfnt_off00007004.bin
7a6f447c6dc9e73ba2f6a55057c9acbb184c33848fbb871a60db11a2163603cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7004 10588 bytes

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