Malicious PDF — malware analysis report

Static analysis result for SHA-256 c032e42aefcb6cf7…

MALICIOUS

PDF

46.7 KB Created: 2020-08-11 04:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f4afdded6bf84a3fc03286391e78a31 SHA-1: 9c2a5a7fbb943185c06773bd0009a8508b596977 SHA-256: c032e42aefcb6cf77b9c44060158869c9252a2b2b49c11e9a5c55aaffe79a4bf
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=code%20of%20ethics%20childcare%20australia%20pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0452/5362/3970/files/govupiraxivugovexidu.pdf'. The document body, though heavily obfuscated, contains these URLs, suggesting a lure to external malicious content. The presence of a visual download button heuristic further supports a social engineering attack pattern.

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.cc/wb?keyword=code%20of%20ethics%20childcare%20australia%20pdf
    • http://files.madhatterrestaurantandbakery.com/uploads/1/3/0/7/130775145/064c5.pdf
    • http://files.panoramiccave.com/uploads/1/3/2/8/132814518/8127756.pdf
    • http://files.mayraaustinbusinesssolutions.com/uploads/1/3/1/6/131606923/4861224.pdf
    • http://kunujir.revjeffmansfield.com/uploads/1/3/1/6/131606339/5779773cb688f3a.pdf
    • https://cdn.shopify.com/s/files/1/0452/5362/3970/files/govupiraxivugovexidu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7930/2296/files/jozowezirujerelevelop.pdf
    • https://cdn.shopify.com/s/files/1/0428/7696/0924/files/xulikepopatego.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/92628626636.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/23358445599.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/kupukidemexudo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/26587847086.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/bizebagezavude.pdf
    • https://cdn.shopify.com/s/files/1/0432/6588/4323/files/kesunikob.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/82711438204.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7340/files/vofisoraruwuwujovixipusi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/59212752389.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/79729363222.pdf
    • https://cdn.shopify.com/s/files/1/0433/7342/8890/files/lalanapepexivu.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/
    • https://cdn.shopify.com/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065fd.bin
e37c26f570d46460b9c93487d8ffc5ce7485e0ece90e4729be0566d4c0114436		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FD 5040 bytes
font_01_sfnt_off00007738.bin
ec99ea886938ffd3f06161ec4bea8e04d2c8839623f513ffbe4f379916b187cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7738 12528 bytes
font_02_sfnt_off00009f09.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F09 4324 bytes

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