Malicious PDF — malware analysis report

Static analysis result for SHA-256 8488a6d4b5a33bc6…

MALICIOUS

PDF

42.7 KB Created: 2020-09-09 07:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9486c2964901dcdcd92924b3c08ee1a SHA-1: 57b961f5c2adffbf319b7382cd9f5f322160b727 SHA-256: 8488a6d4b5a33bc6afad82ca7384df524a60c60dbab0f178fa35b3ce463d6bbf
160 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one prominent link identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic. This suggests the PDF is designed to trick users into visiting malicious infrastructure, potentially to download further malware, and is likely password protected to evade initial security scans.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.me/wix?keyword=badcopy+pro+with+key
    • https://cdn.shopify.com/s/files/1/0440/7204/2661/files/busy_busy_song_mp4_tinyjuke.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7383/files/built_to_last_james_collins.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/pigoves.pdf
    • https://static.usrfiles.com/ugd/34e21e_b92219f6525b486091715bacd0ffecd6.pdf
    • https://static.usrfiles.com/ugd/55cc32_0ccda93c3f654cdca3cbc0f6533ec280.pdf
    • https://static.usrfiles.com/ugd/921909_31b3f26e133f4f0ab2e8ee1961391646.pdf
    • https://static.usrfiles.com/ugd/e73fea_4679ac2eba8b4fd385a6be8b973ce0b9.pdf
    • https://cdn.shopify.com/s/files/1/0434/7451/8180/files/pagubobetusafo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6725/1615/files/maharashtra_housing_society_bye_laws_2020_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/baruch_spinoza_livros.pdf
    • https://cdn.shopify.com/s/files/1/0429/7624/7971/files/dojimozopof.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_off00005e88.bin
d28ccfb47edae82c11842855c6515be0252794c572873bea69e302179e513d2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E88 5256 bytes
font_01_sfnt_off00007081.bin
514138533b3e50717a022b03ab05b0d33f4d04e64e85346f8037e63bc8b5aec8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7081 14744 bytes

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