Malicious PDF — malware analysis report

Static analysis result for SHA-256 219bed124991edfb…

MALICIOUS

PDF

35.5 KB Created: 2020-08-03 17:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a915eadb33bb7e612160f800fc4de656 SHA-1: 4f4533e67cefa22bef6e9607966adbd91a95b5ed SHA-256: 219bed124991edfbe707e1e1812a2aab26cede7a03c5a9128e4df3bfc42631a3
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the primary intent is to redirect the user to a malicious site, likely for phishing or malware delivery.

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.ru/pify?keyword=the+battle+of+agincourt+sources+and+interpretations+pdf
    • http://bofoxeji.ttsvoronos.com/uploads/1/3/2/6/132695384/6317018.pdf
    • http://files.edenshalefarm.com/uploads/1/3/0/7/130776795/f965683d.pdf
    • http://files.zopaart.com/uploads/1/3/0/9/130969717/reguviz-pojek.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/99371353032.pdf
    • https://cdn.shopify.com/s/files/1/0430/0124/9955/files/xarijikoru.pdf
    • https://cdn.shopify.com/s/files/1/0433/1647/8110/files/jatibudamidafop.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/inside_reporting_tim_harrower_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/lexuxulif.pdf
    • https://cdn.shopify.com/s/files/1/0430/4912/3993/files/41704020098.pdf
    • https://cdn.shopify.com/s/files/1/0438/8644/4696/files/vivivezasinetek.pdf
    • https://cdn.shopify.com/s/files/1/0434/7179/8424/files/buxolet.pdf
    • https://cdn.shopify.com/s/files/1/0429/4744/4899/files/pibuvuvenazuja.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/wedasosakovirututefilawo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8449/6550/files/lemezeze.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/povekobaroteteturored.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_off00004c58.bin
2d13ca252e06e4655efbe56920944878bc8c6106f1e521d642ed034ea5b35637		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C58 5504 bytes
font_01_sfnt_off00005f09.bin
025ff68d908db8f87e195f0b406d44d5e787278d0a52dc918efde08b36eb950f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F09 10072 bytes

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