Malicious PDF — malware analysis report

Static analysis result for SHA-256 977e3bb2f4ea1b7d…

MALICIOUS

PDF

117.1 KB Created: 2020-07-27 21:13:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2595ffa61bfe5349929f27f200354488 SHA-1: 046bcaf1e71d6e27ffd6920ffc5051242b6659c1 SHA-256: 977e3bb2f4ea1b7d327117c37efb1d1b367a6fad314a3af939a0f0bf4c27bfc1
170 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits a PDF link farm with numerous links, many hosted on 'cdn.shopify.com', suggesting an attempt to manipulate search engine results or distribute content. The presence of a 'download button' lure and visible command execution instructions further supports a malicious intent, likely to redirect users to a malicious site for further compromise.

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.
  • 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
  • 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=apache+jmeter++for+mac
    • http://files.bambooartscenter.com/uploads/1/3/1/8/131857071/pujeriwetid-napofemerumaw.pdf
    • http://files.cowen.rocks/uploads/1/3/2/6/132681647/2281645.pdf
    • http://files.stmva.org/uploads/1/3/0/9/130969600/sajolimo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/46653302130.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28664871254.pdf
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/41749923023.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4637/files/11900963807.pdf
    • https://cdn.shopify.com/s/files/1/0438/9981/4056/files/zemivamuzadatu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/15366622940.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/gelesekib.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/nafururugudibazefugejedab.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/5280607651.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/82157455760.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/kegikipukigepipipamawup.pdf
    • https://cdn.shopify.com/s/files/1/0434/6429/4557/files/765718045.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_off00013eb3.bin
3a4830e659f94b7427e20ccc6dfc907e86ac1606f095e8149f7cf26e3a9fa4fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x13EB3 22048 bytes
font_01_sfnt_off00017e8a.bin
ac3faa04246370bac6f826909ec6a16774415f695eb049af1e8f24ae70b70e55
pdf-font-stream PDF embedded font (sfnt) at offset 0x17E8A 4744 bytes
font_02_sfnt_off00018ea8.bin
871bbad5f8015b3ba69447b6e721a82b8c9dba8ca27876fe72b817a1a6d29c7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x18EA8 17896 bytes