Malicious PDF — malware analysis report

Static analysis result for SHA-256 c58d9b8351fa6bc6…

MALICIOUS

PDF

48.1 KB Created: 2020-08-25 23:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59fa889a5cb86ddb7ecf1e44734d30dc SHA-1: 2d02b1a28787f01504a2adcc27b8b84824bb027a SHA-256: c58d9b8351fa6bc62dd95108f1cc11aeab7306915ffc031d0c42bbf986d1fd5e
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic specifically identifying it as a malicious redirector. The document body, though partially corrupted, contains text related to 'Dungeons and Dragons character sheet' and a URL that appears to be part of a lure. The primary malicious URL identified is https://ttraff.club/pify?keyword=dungeons+and+dragons+character+sheet+3.+5, which is likely used to redirect the user to a malicious site. The file also exhibits characteristics of a link farm, with numerous external PDF links.

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.club/pify?keyword=dungeons+and+dragons+character+sheet+3.+5
    • http://rategu.longmontsistercities.com/uploads/1/3/1/4/131452958/ca387294b10.pdf
    • http://files.orphan-girl.com/uploads/1/3/1/3/131380786/wemumido.pdf
    • http://files.terraloka.com/uploads/1/3/1/4/131406558/bajuka.pdf
    • http://files.psychosomatique-aippm.org/uploads/1/3/2/6/132683328/f782d4.pdf
    • http://files.thecubeexercisephysiology.com/uploads/1/3/1/6/131606431/3237976.pdf
    • http://files.terralok
    • https://cdn.shopify.com/s/files/1/0431/6486/0575/files/41891422948.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6679/files/nigudefexewutugededuzufi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5374/3270/files/alimentao_saudavel_na_gravidez.pdf
    • https://cdn.shopify.com/s/files/1/0432/9996/3044/files/catholic_liturgical_music_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/32341076353.pdf
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/4413654184.pdf
    • https://cdn.shopify.com/s/files/1/0429/0173/3542/files/minecraft_maps_1._8._8.pdf
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/ornamental_fish_farming.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/597184682.pdf
    • https://cdn.shopify.com/s/files/1/0437/5350/4917/files/95079595747.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/relegukosejimixa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/9952370363.pdf
    • https://cdn.shopify.com/s/files/1/0433/0615/6190/files/saree_blouse_cutting_method.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_off00006f9c.bin
db82cc103f74860622abca60025d9f37a7d06f1213571f0223364cc98ff102ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9C 5324 bytes
font_01_sfnt_off000081b1.bin
3ad7b0f452d6f108c75f523b83e56d89767f12a564e575282db14d7b852dd6e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x81B1 10232 bytes
font_02_sfnt_off0000a4ae.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4AE 4324 bytes