Malicious PDF — malware analysis report

Static analysis result for SHA-256 2553d1552db64e00…

MALICIOUS

PDF

66.8 KB Created: 2020-08-21 05:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 320872143c9d890cd2abd4f19f2a7cb8 SHA-1: d7ed7911fb9e53a5ed317f3dbc7c345e0922d7cc SHA-256: 2553d1552db64e00b8ad9d86fd85cb5a041a60384a5b29de9a30b516fb30f5b7
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1566.002 Spearphishing Attachment T1059.003 Windows Command Shell

The PDF contains a malicious redirector link and a large number of links to external PDFs, suggesting a link farm for SEO poisoning or redirection. The document body also contains a lure to copy/paste content into a command-line interface, indicating an attempt to trick the user into executing commands. The primary malicious URL is ttraff.cc, which is known to host malicious redirectors.

Heuristics 5

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=photoshop+hair+cutting+plugin+free
    • http://saripel.letsvolta.com/uploads/1/3/1/4/131408899/c081867e.pdf
    • http://files.stceciliacare.com/uploads/1/3/0/8/130814279/mamafijotepezo.pdf
    • http://files.granteyeglasses.com/uploads/1/3/1/1/131163666/a7a57b72.pdf
    • https://cdn.shopify.com/s/files/1/0437/6264/7189/files/zutapume.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/complementary_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/79776758556.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/famisaxororex.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/orators_platforms_crossword.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2818/files/sql_interview_questions_and_answers_for_3_years_experienced.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/sap_crystal_reports_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/3818/6394/files/fleetwood_mac_dreams_tab.pdf
    • https://cdn.shopify.com/s/files/1/0431/5332/6241/files/cuidados_del_pez_betta.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/boron_family_ncert.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/83838473320.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/xikadoruvefukin.pdf
    • https://cdn.shopify.com/s/files/1/0428/5713/6294/files/83803795212.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_off0000c78c.bin
2e072b1ef8c7f35a23e84803ae70f9478b65bb28f5eccfd1f4bc26cfe7972341
pdf-font-stream PDF embedded font (sfnt) at offset 0xC78C 5276 bytes
font_01_sfnt_off0000d979.bin
960c0181d5cac457bd6ad399d57dd5e4230f81a933e43d5ff6b03c11d7c294d6
pdf-font-stream PDF embedded font (sfnt) at offset 0xD979 10652 bytes