Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4562bcb376a50f…

MALICIOUS

PDF

77.7 KB Created: 2020-08-11 00:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5373e14308affe70a197d5c50b32eaf9 SHA-1: bbff025257415e23140076a2888e344ff947e4ff SHA-256: dd4562bcb376a50f36e8c8d624c4911f7bf087cf8c00401a978f44c718cc7093
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure for a PDF download. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous links, likely for SEO manipulation to increase visibility of malicious content. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=lipids+biochemistry+pdf+download
    • http://suvululu.genesiscmty.com/uploads/1/3/2/7/132712323/7836284.pdf
    • http://files.texassaddlefitter.com/uploads/1/3/1/4/131454733/figavavufupotapirex.pdf
    • http://files.scfcseychelles.com/uploads/1/3/1/4/131483266/maramulegaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7996/files/sadadegofupud.pdf
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/rareraturabiviwowa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3755/5864/files/75887730575.pdf
    • https://cdn.shopify.com/s/files/1/0431/6987/4082/files/84948981435.pdf
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/10557347061.pdf
    • https://cdn.shopify.com/s/files/1/0429/3731/9590/files/kujefivujosamuveresituda.pdf
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/gizixivifajezakalaxij.pdf
    • https://cdn.shopify.com/s/files/1/0432/1440/5793/files/960480224.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/kesuzuwawabidewun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zututekafufefosapebuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62114329075.pdf
    • https://cdn.shopify.com/s/files/1/0430/7052/1495/files/72466376321.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_off0000f219.bin
39460b1dd8a5ea36fd0a5a6bba7ed5cb1e88b036e122c9cb9c37f29238ed7409		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF219 5668 bytes
font_01_sfnt_off0001054f.bin
56eb8f60fc5ee12dfb5d98a5117906abe2e561c869e0b1eb97efc0f1ee70b392		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1054F 10724 bytes

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