Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea43766e93599060…

MALICIOUS

PDF

39.2 KB Created: 2020-08-01 00:55:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93cfd879d9839eecc56dea06772c1465 SHA-1: f8d4dbf441677f18c418562315b6676fab51464f SHA-256: ea43766e93599060781f9cd8e1d29482a6b4af8abd7c1d63db3c30531d2d223b
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, identified as a PDF link farm. One of these links, https://ttraff.ru/pify?keyword=how+to+calculate+cumulative+relative+frequency, points to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to the topic of the links, suggesting a lure to trick users into visiting these malicious sites. No scripts were extracted from this sample.

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=how+to+calculate+cumulative+relative+frequency
    • http://files.davidhahnonline.com/uploads/1/3/1/1/131164067/rasizufen.pdf
    • http://files.bestinthewestevents.com/uploads/1/3/0/7/130740138/filumatijajavad-zowuxegewiga-vazukosigina.pdf
    • http://files.tirinstituteofmaine.com/uploads/1/3/2/3/132303028/370772.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/lusoziganiwik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/lomof.pdf
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/bopumaputixor.pdf
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/20525845925.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/16585740467.pdf
    • https://cdn.shopify.com/s/files/1/0431/8448/8610/files/harbor_freight_electric_winch.pdf
    • https://cdn.shopify.com/s/files/1/0434/1691/2023/files/873753102.pdf
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/ridutilipujifonewumidebop.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/bederaxakukab.pdf
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/pubolubafixujowimororin.pdf
    • https://cdn.shopify.com/s/files/1/0440/1935/1710/files/47816065084.pdf
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/87516667681.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_off00005a82.bin
bc754c5e5288546f00f3db99e9c4a0bfd1f5db8d48f1404abb9a54368b3cdc4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A82 5192 bytes
font_01_sfnt_off00006c38.bin
565c694b6af72f51b99cec358a0a5f6e9c7a6cfe5ef381839b25136904e5d8c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C38 10476 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.