Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde3c280ecac14f0…

MALICIOUS

PDF

42.9 KB Created: 2020-08-03 04:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 892e90b1d898298716712fcd409c03d4 SHA-1: a5426043286e71f345e1dbcd27cc34debdb1f9cb SHA-256: bde3c280ecac14f022bc72ed2761538cfd32e85873d7d1fbbdef80656bd6cd35
160 Risk Score

Malware Insights

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

The PDF document contains a link farm and a critical redirector link to ttraff.com, which is known malicious infrastructure. The document body text, though obfuscated, contains the URL 'https://ttraff.com/pify?keyword=install+git+from+source', suggesting a lure to install software. The presence of a visible LOLBin command execution instruction further supports malicious intent, likely to download and execute a second-stage payload.

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.com/pify?keyword=install+git+from+source
    • http://files.katrinashreve.com/uploads/1/3/0/8/130874485/de70e.pdf
    • http://files.nathangentryphoto.com/uploads/1/3/1/3/131381901/e7ab3894a073.pdf
    • http://files.themilkshed-devon.com/uploads/1/3/0/8/130814169/5317598.pdf
    • http://files.richgrillz.com/uploads/1/3/1/3/131381901/xorijiponi-panudutuvumoza-guzegovisu.pdf
    • http://files.solutioncraft.org/uploads/1/3/1/4/131437246/9055240.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/farapun.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/86595153970.pdf
    • https://cdn.shopify.com/s/files/1/0441/0625/2440/files/24704433072.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/45463501281.pdf
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/99612477000.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/fusaxenokigitanaduwasogod.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/45580185980.pdf
    • https://cdn.shopify.com/s/files/1/0434/7019/2802/files/mibutuserudadodudiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/nawezavijowibam.pdf
    • https://cdn.shopify.com/s/files/1/0434/3188/6998/files/27923980812.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/63834100117.pdf
    • https://cdn.shopify.com/s/files/1/0432/6660/5219/files/94417191106.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_off000069b2.bin
470b54068b599580187d692f6262ddcbc3b74e3d3d80a34139b398991644a9ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B2 5140 bytes
font_01_sfnt_off00007b1c.bin
73ad90a6fe5dbb3e513d1ec9c5fa5150009df2da4a2648bbdd44ba6e19a7f41a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B1C 10420 bytes