Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9564d6487d9106b…

MALICIOUS

PDF

51.9 KB Created: 2020-08-05 01:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69a8dd3afd665c3a9a32a51054fa269a SHA-1: f6b4a7e775519f0307939c7259229b1d36967f0f SHA-256: e9564d6487d9106b22aa62f7f0ee46063310957fa9e4720e21d29b335c027136
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF document contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=absorption+costing+and+variable+costing+pdf', points to a known malicious redirector. The document's body text is largely unreadable due to encoding issues, but the presence of numerous links suggests a malicious intent to redirect the user to external, potentially harmful, content. The heuristics indicate the PDF is designed to host a mass external PDF link farm, with many links pointing to shopify.com domains, likely for SEO manipulation or to obscure the final malicious destination.

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=absorption+costing+and+variable+costing+pdf
    • http://damej.pre-protein.com/uploads/1/3/1/3/131383297/7640442.pdf
    • http://files.andreakim.co/uploads/1/3/1/1/131164130/588ac6b8d42e62.pdf
    • http://files.whiteeagleglobalsolutions.com/uploads/1/3/0/7/130775725/rudosoluval_mekuwimezuxeja_fikagifageso_xerap.pdf
    • http://files.mindfulevolution.net/uploads/1/3/1/8/131871744/2668526.pdf
    • https://cdn.shopify.com/s/files/1/0434/3096/9511/files/77340875578.pdf
    • https://cdn.shopify.com/s/files/1/0432/8410/3332/files/dezazid.pdf
    • https://cdn.shopify.com/s/files/1/0447/8559/8615/files/bipolare_strung_test.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofifarigomikidapowokov.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/sowowekazagosetu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/97550847788.pdf
    • https://cdn.shopify.com/s/files/1/0435/8638/8136/files/49508798148.pdf
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/pozinediwegibedeli.pdf
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/jixepototajexuvagexon.pdf
    • https://cdn.shopify.com/s/files/1/0434/3195/2536/files/dubujenevakuxuxofuzi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/moketozobikubag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3530/3831/files/divunirodevakitu.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_off00008b5f.bin
e6458bf645ab0b003877485d3dbc067a2fc373bbfb6e871ecb8710815105a7ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5F 5512 bytes
font_01_sfnt_off00009e2c.bin
1950909456b399e5c30bf85e40c72ead22c0cbee1095b9355de2b74873e6ee41
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E2C 10580 bytes