Malicious PDF — malware analysis report

Static analysis result for SHA-256 598ae932abd6c4bf…

MALICIOUS

PDF

43.9 KB Created: 2020-08-08 04:33:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7acaed62ecbdb345f9cd0f2513d42f6c SHA-1: 8e041ca9388aa1277d1a8cec7f3ebdf0ba42eedd SHA-256: 598ae932abd6c4bfb71f33cd4a8a677e9d9be021c7e9c6596faece53cf4639c7
160 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO poisoning. One critical heuristic indicates a link to known malicious redirector infrastructure at 'ttraff.ru'. The presence of visible command execution instructions also suggests potential for further malicious activity.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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.ru/pify?keyword=geological+ages+pdf
    • http://files.dancetodaybiz.com/uploads/1/3/1/4/131438808/muruworumavame-bepobuzamewuk.pdf
    • http://files.cmebenezer.com/uploads/1/3/1/0/131070733/wojapuro-jupenadavekubi-ritokimotuf.pdf
    • http://files.tryoungcrew144.com/uploads/1/3/1/6/131606069/newapepefoxosa.pdf
    • http://sarum.chasehillschool.com/uploads/1/3/1/4/131453574/bapigijumewofetedi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/mebabisukanajonizexasek.pdf
    • https://cdn.shopify.com/s/files/1/0431/0371/5489/files/96531302759.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4827/files/97361596814.pdf
    • https://cdn.shopify.com/s/files/1/0437/2650/4086/files/15427341894.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/sujowodabenijon.pdf
    • https://cdn.shopify.com/s/files/1/0434/7052/0470/files/7873198550.pdf
    • https://cdn.shopify.com/s/files/1/0433/1402/0507/files/30801882466.pdf
    • https://cdn.shopify.com/s/files/1/0440/2076/0741/files/powershell_delete_file.pdf
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/tradutor_alemo_portugus.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/ledumewadezasidulido.pdf
    • https://cdn.shopify.com/s/files/1/0437/6854/5441/files/nosuwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2478/files/62826285512.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_off00006207.bin
6feb3c0524138583fc86cbffd6525c120b0c89fc31e97735dfa08e7efe88e0e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 4860 bytes
font_01_sfnt_off0000729f.bin
5663c3588a6e7357b890fee6d7fad233b2c27c4a67adaaa67eb1bdfdb98b5166
pdf-font-stream PDF embedded font (sfnt) at offset 0x729F 10004 bytes
font_02_sfnt_off000094d7.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x94D7 4324 bytes