Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8028c840fd64959…

MALICIOUS

PDF

40.9 KB Created: 2020-08-03 11:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6db4e31e57d88360849e56af32d70507 SHA-1: 4aa3ac2e87aaaf7e81ea3a449182437ecf69d030 SHA-256: c8028c840fd64959ce0c8f4caf8b03044cbc4eb7e7d0f3e4a6530d230be71c31
200 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Mtg arena crashing' and includes the malicious redirector URL. The heuristics indicate social engineering tactics to bypass security measures, instructing the user to disable antivirus and potentially run commands directly. This suggests the document is a lure to redirect the user to malicious infrastructure.

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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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=mtg+arena+crashing
    • http://files.lplimages.com/uploads/1/3/1/4/131437926/4aadf23fa2ec79.pdf
    • http://files.classicallycateboutique.com/uploads/1/3/0/7/130776655/cc5b9.pdf
    • http://files.ichenartacademy.com/uploads/1/3/1/8/131856358/toloxadiremafili.pdf
    • http://files.fsk-midpen.com/uploads/1/3/2/7/132712006/maper.pdf
    • http://files.franzjagerstatter.com/uploads/1/3/0/8/130813827/lotabibob.pdf
    • https://cdn.shopify.com/s/files/1/0436/9226/1529/files/gurakewuwufen.pdf
    • https://cdn.shopify.com/s/files/1/0437/6333/5326/files/wibaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/5137/7049/files/nizamazalimefakuzezas.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/81155999214.pdf
    • https://cdn.shopify.com/s/files/1/0429/1464/4127/files/lemisiwobiwexaxuwew.pdf
    • https://cdn.shopify.com/s/files/1/0434/9391/6837/files/55809102470.pdf
    • https://cdn.shopify.com/s/files/1/0429/4334/8892/files/51239673835.pdf
    • https://cdn.shopify.com/s/files/1/0434/2684/0737/files/jokopiginisafugewas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdf
    • https://cdn.shopify.com/s/files/1/0431/9189/4176/files/lowes_morristown_tn.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/potivukuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4703/files/severepibaduvezojatuga.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/tinkers_material_traits.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_off0000627e.bin
012881a5f727d0a7c43ba2fc1a7e4d9a8a4cb267dfb74a928b65c8c3c5c1c2aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x627E 5036 bytes
font_01_sfnt_off000073a9.bin
83c273d5eee378cf85f0fcb12c4f150c91f643e07d9b66eae3cefe00bdfa1bf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A9 10296 bytes

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