Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc98e7e0dd93b318…

MALICIOUS

PDF

47.1 KB Created: 2020-08-31 22:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05dbe13519b2f7a544b2f1d2caaaddd2 SHA-1: 43547f567148a36e06915ed6313f21868b096076 SHA-256: dc98e7e0dd93b31885d6e9ef271bbf37165d36bc1acae425e6bf187297692a23
150 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDF documents, a technique often used for SEO poisoning or to obscure malicious destinations. One prominent link directs to a known malicious redirector, 'ttraff.me', which is likely intended to lead the user to a malicious site or download. The document body, though partially corrupted, includes the URL 'https://ttraff.me/wix?keyword=how+to+use+blood+pressure+apparatus+manual', reinforcing the malicious intent.

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.me/wix?keyword=how+to+use+blood+pressure+apparatus+manual
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/abstract_algebra_an_introduction_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/wuzorakogakoxazakawore.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/nesaji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/dawoxolate.pdf
    • https://static.usrfiles.com/ugd/08fe48_7fcc710940264210911742056d6c7671.pdf
    • https://static.usrfiles.com/ugd/f80014_3e1744c7b7fd4ad288f65b9ad821fec5.pdf
    • https://static.usrfiles.com/ugd/23b571_bbbb50dcbc134a588bd0884c3940ec15.pdf
    • https://static.usrfiles.com/ugd/96768c_1c2c77420ab447399f1f4f94212fcc88.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/werojofola.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/dujosiloraporopobulawal.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
font_00_sfnt_off00006dae.bin
cc0b2dd078eeaa4c5046cebfd6ce7cdbd0b8e0b84967581affc07fd370bb5dfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 5132 bytes
font_01_sfnt_off00007f0c.bin
f5385564c881e35e12f80a6e34d10eac51f2648a28c4e53998dbc22bf2cf7588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0C 10120 bytes
font_02_sfnt_off0000a1ab.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1AB 4324 bytes

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