Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e136facd28ad387…

MALICIOUS

PDF

51.8 KB Created: 2020-07-27 21:38:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c976ab8ab047f04b53b901ca589aca4 SHA-1: 8b92c702e87ad11097da062d2dc65c710ba4c8fa SHA-256: 9e136facd28ad3877a8f3b6abbb494dd97dbdac8c6cfab1302fc5d0142064683
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, a common technique for SEO poisoning or creating link farms. One of the primary links directs to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body itself is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting it's not a typical user-created document.

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=hand+embroidery+stitches+video+free
    • http://files.vanislandvehicledesign.com/uploads/1/3/1/3/131380596/997cfa.pdf
    • http://files.mabellephoto.net/uploads/1/3/1/6/131606390/xalezebu-razalifinufiwop.pdf
    • http://files.ixoramemphis.com/uploads/1/3/0/7/130739344/3451634.pdf
    • http://files.haleybgreen.com/uploads/1/3/1/4/131452733/mozevir.pdf
    • http://files.thephoenixflyer.com/uploads/1/3/0/7/130740212/saxutoruru_netatose_timelage.pdf
    • http://files.mabellephoto.net/uploa
    • https://cdn.shopify.com/s/files/1/0433/2906/1014/files/jipikamedegukekiput.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/sipirukufe.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8908/files/43357692041.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/44253719492.pdf
    • https://cdn.shopify.com/s/files/1/0431/6486/0580/files/jebolibefigobezoramab.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/24875306593.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43034806536.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/11464517017.pdf
    • https://cdn.shopify.com/s/files/1/0434/5777/3718/files/bavunalujuvitisonusu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1450/4093/files/40699961060.pdf
    • https://cdn.shopify.com/s/files/1/0429/9436/8671/files/76655837312.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_off00008154.bin
76b0d76703f2ed683c037c59ae1de8a56df621a1aa9cb0131dec6a0ca5ed844c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8154 5280 bytes
font_01_sfnt_off00009315.bin
6271499e37146c847013bed512b235a99556eda55658ae1229ea592dd7a22e6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9315 14508 bytes

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