Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d5a1f2a530e192…

MALICIOUS

PDF

55.2 KB Created: 2020-08-08 04:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 486d06b7db9fdda214eca4bc2bdd8222 SHA-1: f57e2fc89c706846fda260cc6786026b6ef5d496 SHA-256: 33d5a1f2a530e1922c931e3bdf601f67b7bf90d76fcb992ddcea59c4fe08890a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document is designed to trick users into visiting malicious sites, likely for phishing or to download further malware.

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=aluminum+extrusion+design+guide+pdf
    • http://files.sharonscouts.org/uploads/1/3/2/3/132303310/tanekudumuj.pdf
    • http://files.thealibiinteriors.com/uploads/1/3/2/7/132712214/nebesobukareza.pdf
    • http://files.lilithsconjurebox.com/uploads/1/3/0/8/130874213/bolujam.pdf
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/already_still_and_yet.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/84315056886.pdf
    • https://cdn.shopify.com/s/files/1/0430/4053/8773/files/tamaroxajukizaneramutu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/32915541700.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3800/files/lynnhaven_fishing_pier_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/7125/8278/files/30610100459.pdf
    • https://cdn.shopify.com/s/files/1/0428/7994/2812/files/58751786139.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4665/files/bujawakowelibisusomoja.pdf
    • https://cdn.shopify.com/s/files/1/0429/6428/7651/files/dosolagipub.pdf
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/39831765014.pdf
    • https://cdn.shopify.com/s/files/1/0431/1502/0448/files/27326207352.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_off00008467.bin
59ea120f371c17d29ed8cdbf390e42e854a7de1ea50fe58883fdb783bb597f75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8467 5208 bytes
font_01_sfnt_off00009611.bin
fdee889162e117f7770a8bc52ac1651bb140b65d300752b245a3568645da4792		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9611 10484 bytes
font_02_sfnt_off0000ba11.bin
2a5f1667c2e343500efde63e3dd6a136498333968b1680966ac5eb34589f1174		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA11 16144 bytes

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