Malicious PDF — malware analysis report

Static analysis result for SHA-256 e567dde777e0b4c4…

MALICIOUS

PDF

48.2 KB Created: 2020-07-25 02:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ea0b1caf0a053b263f1291f5d90c508 SHA-1: 580c5000b38532e459282c8814c2e45747f0153f SHA-256: e567dde777e0b4c4d8d4ea011431d35b1811537bc700f663c2b247df141520fc
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and PDF_SEO_LINK_FARM indicates a large number of external links, suggesting a link farm or SEO poisoning attempt. The document body, though heavily garbled, contains text related to the URL, indicating a lure. The primary attack vector appears to be directing users to malicious infrastructure.

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.ru/pify?keyword=large+format+camera+lenses+ebay
    • http://files.temosart.com/uploads/1/3/0/8/130873869/vekixiwopilobog_xuzoxatotagu_tokedi.pdf
    • http://files.susanwenz.com/uploads/1/3/0/7/130776401/wadizonefe.pdf
    • http://files.moombaparkps.vic.edu.au/uploads/1/3/0/7/130738792/5c3d80c06ac.pdf
    • http://files.donkeytalkshop.com/uploads/1/3/0/9/130969690/lowipetidipinu.pdf
    • http://files.donkeytalkshop.com/uploads/1/3/0/9/130969690/lowipe
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/xelobutotomelorokenuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1271/files/98843255078.pdf
    • https://cdn.shopify.com/s/files/1/0440/8036/5720/files/91284441588.pdf
    • https://cdn.shopify.com/s/files/1/0433/5098/2821/files/45738631588.pdf
    • https://cdn.shopify.com/s/files/1/0430/7202/8823/files/42865275471.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/jigakufuziwemuvukivonalo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4909/files/35415017578.pdf
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/sefomukup.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5004/files/25135433676.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.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_off0000809f.bin
c92b8c1c5b0542a4196ac8da39fdc6aeb3eb8443a6aab644d6bc7598c34abbbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x809F 5124 bytes
font_01_sfnt_off000091fa.bin
850ab5aa4bd4e9e4859014cb934e0768f2194b29b944208de91cadc97cfdeb42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91FA 9892 bytes

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