Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95f874b68b94250…

MALICIOUS

PDF

42.2 KB Created: 2020-07-25 20:22:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6180304ed695d98057d9cb222fa44c87 SHA-1: 730540bd2fc3e7a8540a6283be8c52d0a855f123 SHA-256: e95f874b68b9425029d85359ab06f94f44fb7449f5558c97f7881eaba21854fa
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Android emulator' and 'wkhtmltopdf', suggesting a lure for users searching for such software. The primary malicious link is ttraff.com, which is identified as a malicious redirector.

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.com/pify?keyword=android+emulator+ringan+mac
    • http://files.youthartscenter.org/uploads/1/3/0/7/130738889/7936769.pdf
    • http://files.troutbum.ca/uploads/1/3/2/7/132710655/046c6686a.pdf
    • http://files.profpaulgilbert.co.uk/uploads/1/3/0/7/130776445/2185289.pdf
    • http://files.pro
    • https://cdn.shopify.com/s/files/1/0428/5890/5759/files/49787788339.pdf
    • https://cdn.shopify.com/s/files/1/0431/8891/2290/files/pixejabimekuvovoxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xakisone.pdf
    • https://cdn.shopify.com/s/files/1/0437/7883/4583/files/rekexebexosasexaget.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/dofarexinuruzitusonixu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7872/9374/files/23591441915.pdf
    • https://cdn.shopify.com/s/files/1/0437/3640/0037/files/wubuwutigidetujolivup.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/fujituvuwi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/35546551051.pdf
    • https://cdn.shopify.com/s/files/1/0433/6956/2266/files/4594212961.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_off0000688e.bin
d240bbf2f5d9b7e7a89571892c4c45ffcccc657cd8bc854b4b4bec4d5c11c268		 pdf-font-stream PDF embedded font (sfnt) at offset 0x688E 4952 bytes
font_01_sfnt_off0000793f.bin
519bd55ba6cb989457d0697058a439129f36ef8d6f71d2f7965c660b56d416e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x793F 10100 bytes

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