Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05b32e1a1412203…

MALICIOUS

PDF

42.7 KB Created: 2020-08-12 13:17:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d0c8e02969ac69ba9375fde8c495a27 SHA-1: a4434904c10bf6a06440316a10bdd1c006cc32ae SHA-256: c05b32e1a14122035ff6c1fdfcfc74813ffa9e736584c1b50c606581a20403e1
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains the text 'Certified ethical hacking study guide pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous links and the redirection to a malicious site indicates a link farm or redirection attack.

Heuristics 3

  • 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.
  • 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=certified+ethical+hacking+study+guide+pdf
    • http://bizolowu.abstractartandyoga.com/uploads/1/3/1/3/131380600/6757426.pdf
    • http://files.biomedicalequipmentplanner.com/uploads/1/3/0/9/130968943/1640062.pdf
    • http://files.communitycoc.org/uploads/1/3/1/3/131398367/jusino_didekatemo_lipamezikapanu_fesedosifa.pdf
    • https://cdn.shopify.com/s/files/1/0440/5238/1846/files/monubomezutakapegena.pdf
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/68390194015.pdf
    • https://cdn.shopify.com/s/files/1/0430/6635/9962/files/51173425884.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdf
    • https://cdn.shopify.com/s/files/1/0427/7318/4678/files/fufosewizutoravakeverox.pdf
    • https://cdn.shopify.com/s/files/1/0440/8652/6102/files/tovesewifujuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jikoleluvotejagumali.pdf
    • https://cdn.shopify.com/s/files/1/0437/9885/5837/files/dementia_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/25789824688.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/49173710975.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/vitekozil.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/zixinogomemejogipu.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_off000065e7.bin
bbbfd91e3889099463d61aa04d934d5c19a29af5dd9041d2edef58b7c8577e4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E7 5488 bytes
font_01_sfnt_off00007891.bin
a82da2f22ef6120cd010d94c679c1ca1379c7666bd1208f7f23196f25d495cb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7891 10984 bytes

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