Malicious PDF — malware analysis report

Static analysis result for SHA-256 55810e2306b36d07…

MALICIOUS

PDF

74.4 KB Created: 2020-08-10 00:04:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f865cd667d284103888b7545d8ce82c SHA-1: 2ffeefb983fc12b6bc2a9b6adef4368f4f2c98a5 SHA-256: 55810e2306b36d074176d01ef77acd0fc4184d0a5954d76bed1df3a5592db137
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 a link farm hosted on cdn.shopify.com. One of the primary links directs to a known malicious redirector at ttraff.ru, which is likely intended to lead the user to a malicious payload or phishing site. The document body, though heavily obfuscated, also contains the URL for the 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.ru/pify?keyword=arabic+vocabulary+in+urdu+pdf
    • http://xagikaz.brittanysloan.com/uploads/1/3/1/1/131164250/jiger.pdf
    • http://files.fundamentalmed.com/uploads/1/3/1/4/131438234/samuwuja-pepuwunopaxafu-felazanaxuxak.pdf
    • http://files.brockskennel.com/uploads/1/3/2/8/132816195/abd7f.pdf
    • https://cdn.shopify.com/s/files/1/0430/8638/1207/files/osrs_ghosts_ahoy.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18842325712.pdf
    • https://cdn.shopify.com/s/files/1/0435/3546/6655/files/pizeduvosu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2320/files/gudaforuba.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/madagojekibujijunatojedo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/befezakubosixud.pdf
    • https://cdn.shopify.com/s/files/1/0429/3948/2275/files/jenkins_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/9960108282.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70282461387.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/2000/files/jugugikexejadasodof.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000e869.bin
e609c7c4dd6b86cd9e900beac29f034f61ef91f985208770592b50d3b33a8d81		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE869 29328 bytes
font_00_sfnt_off0000aba0.bin
f67b6c3934e15f6c137e34390666c042df6abe1e545da27353051e437caf40c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABA0 5264 bytes
font_01_sfnt_off0000bda0.bin
d93ec1d76f26a519fed6e67b18fc3f5131497da4632b91118ce566523f20f63c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA0 13376 bytes

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