Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2aef2a149e62486…

MALICIOUS

PDF

42.3 KB Created: 2020-07-30 06:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d03a118c84e9a89147a530193f109ac8 SHA-1: 0764cb3b10311ecb110c6dad465e549642d768ab SHA-256: b2aef2a149e62486a48566a6eaabee4809e77e4fdb488ad3b15f2b08b4422315
128 Risk Score

Malware Insights

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

The PDF contains multiple links, with one identified as a known malicious redirector. The document body, though partially garbled, suggests a lure related to file conversion ('Chuy

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.
  • 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.ru/pify?keyword=chuy%25E1%25BB%2583n+t%25E1%25BB%25AB+jpg+sang+pdf
    • http://files.barefootgardens.org/uploads/1/3/1/0/131070651/duvubuzanol.pdf
    • http://files.madeincommon.com/uploads/1/3/1/4/131453065/puziwobem.pdf
    • http://files.farthingstewart.com/uploads/1/3/1/3/131379759/fulevemepibu.pdf
    • http://files.rudetudors.com/uploads/1/3/1/6/131606011/fbc6569842d12.pdf
    • http://files.intuitivetouchworld.com/uploads/1/3/0/7/130739234/fa51d4ed5df2.pdf
    • http://files.farthingstewart.com/uploads/1/3/1/3/131
    • https://cdn.shopify.com/s/files/1/0435/7862/2111/files/73573256032.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/24259933629.pdf
    • https://cdn.shopify.com/s/files/1/0436/7410/8057/files/59261250885.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/nalugeturup.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/puzatanowurutewezar.pdf
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/gegilabukuluzepuxilela.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7417/files/31624948657.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/30874279585.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/77660803354.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdf
    • https://cdn.shopify.com/s/files/1/0437/8070/2366/files/80235621044.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/waladako.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_off000065b4.bin
9f5e553b495e9defa0a6a4f7c0b562de3aef75f358830df82cb58dc2a46f19c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B4 5348 bytes
font_01_sfnt_off000077e3.bin
591e6e6e3ce3fb733e9e0b6c1f0374061bb9f864c39dc4f06c42b25b4242dd1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77E3 10288 bytes

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