Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea117b6ca1c7e4f…

MALICIOUS

PDF

44.9 KB Created: 2020-08-06 15:47:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0289358c1ceef0395205aa7eb644fdc0 SHA-1: 790ecdc8ed3353587a4f08bdb99b4ad671544ccc SHA-256: 9ea117b6ca1c7e4f89f34b80069eb27531ef5f367227c8c746ca33d0ff0154cb
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=by+water+and+the+spirit+umc+pdf'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify. The presence of a 'SE_LOLBIN_RUN_COMMAND' heuristic suggests that the document may contain instructions or visible command text involving Windows execution tools, further indicating a malicious intent to redirect or execute further payloads. The document body itself is heavily obfuscated but contains the malicious redirector URL.

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.cc/pify?keyword=by+water+and+the+spirit+umc+pdf
    • http://gokimafuf.theamericancurlstandard.com/uploads/1/3/0/8/130813108/446440.pdf
    • http://files.steppingintoci.com/uploads/1/3/1/8/131856987/vewikuguwisalasisu.pdf
    • http://files.fairmounthardwarelumber.com/uploads/1/3/1/0/131071289/5004344.pdf
    • http://files.erinmicklowstylist.com/uploads/1/3/0/7/130775563/1826172.pdf
    • http://files.missamywatkins.com/uploads/1/3/1/1/131163590/zerikuxawavomiron.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3085/files/dogijamiluneg.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/48085238943.pdf
    • https://cdn.shopify.com/s/files/1/0434/1107/9317/files/roque_antonio_carrazza_icms.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/jakunigeditigamowujufame.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/26157668056.pdf
    • https://cdn.shopify.com/s/files/1/0432/2908/5859/files/1861416163.pdf
    • https://cdn.shopify.com/s/files/1/0435/3461/4688/files/guderian_achtung_panzer.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/26006878197.pdf
    • https://cdn.shopify.com/s/files/1/0429/6425/4883/files/ap_psychology_barron_s_book_8th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9162/files/9123863326.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_off0000664a.bin
e67cda5d56a55b44f409b1012f07739fae2d2068393c1b66a5011110cd35066e
pdf-font-stream PDF embedded font (sfnt) at offset 0x664A 5604 bytes
font_01_sfnt_off00007949.bin
a9c8893ef9749affc5f0172b1095bde7a6addd173f0ffeb166568fc5d352880d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7949 2252 bytes
font_02_sfnt_off0000830a.bin
eb8956cd9e3106d10e6696e1dcba1ee81db47eeca93f5e6e90ed2dd0fbef9794
pdf-font-stream PDF embedded font (sfnt) at offset 0x830A 10428 bytes