Malicious PDF — malware analysis report

Static analysis result for SHA-256 a719867c8914130c…

MALICIOUS

PDF

38.9 KB Created: 2020-07-28 17:25:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a65af9bef3a12b5f46e156a1ac190a83 SHA-1: c7d9d102e6c6b70e856975efed42a5769cd95015 SHA-256: a719867c8914130c82ab88b10da2d17b1cff004a202e6131f2d4360d87405eab
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=old+soul+songs+free
    • http://files.stevenpaulsalon.com/uploads/1/3/0/8/130813301/2215408.pdf
    • http://files.richmondcountylittleleague.com/uploads/1/3/0/8/130874030/pemaleperarifime.pdf
    • http://files.theprideoflouisville.com/uploads/1/3/1/3/131378821/gibasugapekine.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/15381901538.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96626323422.pdf
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/18798130429.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/75200785810.pdf
    • https://cdn.shopify.com/s/files/1/0429/3738/5123/files/88725943443.pdf
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/saragelewalekawag.pdf
    • https://cdn.shopify.com/s/files/1/0428/4301/3287/files/16883957951.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/74358866198.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/15929346306.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41718344304.pdf
    • https://cdn.shopify.com/s/files/1/0440/6345/7432/files/vuloroditokapakovibis.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/
    • https://cdn.shopify.com/s/files/1/0432/8561/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c4a.bin
26f7b8f486c0525f52b95dd68f933a9cd569d1353e67afe280a6e703c0f0627f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4A 4644 bytes
font_01_sfnt_off00006c1d.bin
613621f7d3694b5fc3daa6e38e12a6c3c7a83f9677484935f079ce709898b565		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1D 10148 bytes

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