Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e4126e1140d52d9…

MALICIOUS

PDF

41.7 KB Created: 2020-08-24 12:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a288e4e0f745c9c06b95fe2d3e4b2b47 SHA-1: 7306a1dacfafa212c95a882e91b77bc3f99cb1d2 SHA-256: 3e4126e1140d52d96b1e7c9039e9a98d1444a40e3e919cdba0b20b526bdcaff9
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as information about artificial kidney dialysis. It also functions as a link farm, pointing to numerous other PDFs, likely for SEO manipulation or to spread further malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is a malicious lure.

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.com/pify?keyword=artificial+kidney+dialysis+information
    • http://files.therealdealwyatt.com/uploads/1/3/0/7/130740242/nekisudadakid_zijovuzusuvi_zigisilow.pdf
    • http://files.xiphospress.com/uploads/1/3/1/8/131871658/mewarumotip.pdf
    • http://files.kurtfit.com/uploads/1/3/2/3/132303170/d91b13025a12.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/cassandra_client_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/volo_s_guide_races.pdf
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/nukigavo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/29809531656.pdf
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/37670670949.pdf
    • https://cdn.shopify.com/s/files/1/0434/5295/6838/files/bodufabudunezu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xozujegemuzudileruzodedus.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9203/files/35818187321.pdf
    • https://cdn.shopify.com/s/files/1/0437/0569/6407/files/trait_de_l_argumentation.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_off000065ef.bin
c7af490a21dddaa22598bbbf346b4345d1b3ba819afbeb5d1e66f330002cc455		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65EF 5324 bytes
font_01_sfnt_off000077ee.bin
f87e4b0f2b7945316728859adacbf78f60625fd8c3f34f3a8c1e5dc7fb2be5e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77EE 10048 bytes

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