Malicious PDF — malware analysis report

Static analysis result for SHA-256 97650aa1bf83779b…

MALICIOUS

PDF

38.2 KB Created: 2020-08-23 17:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 565ec3b55326648d3d9d84624b3c4618 SHA-1: a261f73fb6c0e45744b6c900e52e1e5a7c93f2fd SHA-256: 97650aa1bf83779bf745ab3aa207672c85660fd5be3ac07b4c1aac66b7b6135f
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting it is a worksheet with answers, likely a lure. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious infrastructure, potentially for further exploitation or phishing.

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=geometric+sequence+worksheet+answers
    • http://degozojix.12stepspirituality.org/uploads/1/3/1/8/131871864/figorajoditu.pdf
    • http://baduvov.jacquelinecutler.com/uploads/1/3/0/8/130814229/76e426f43da.pdf
    • https://cdn.shopify.com/s/files/1/0434/6976/6821/files/zawuzuzobemixugojim.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/ziketeranozu.pdf
    • https://cdn.shopify.com/s/files/1/0439/3461/3659/files/78704215.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/macos_catalina_10._15_final_dmg.pdf
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/jopisuzanajar.pdf
    • https://cdn.shopify.com/s/files/1/0432/1987/8048/files/angry_text_faces.pdf
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/actinomycosis_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0448/0329/3346/files/ubqari_magazine_may_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/9775089030.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_off00005734.bin
5cab9264c46a7ddfde077c3562a56b626c44b78fecbc52f2d8d8735cd7bffc0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5734 5320 bytes
font_01_sfnt_off0000693a.bin
af5585e9492e6325817884917ff4408e333b0142af8b13dfb6e0e34bdeaf24c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x693A 10272 bytes

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