Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8879dfc1a65e8e0…

MALICIOUS

PDF

43.2 KB Created: 2020-08-31 19:06:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29e84c48be71d2f8de1c38d852b9553d SHA-1: 204925c7414036c9be400edb4d8ae923353d6814 SHA-256: c8879dfc1a65e8e06679ca760104aee4ade835e5151102cc95c8f17d32591e80
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a malicious redirector URL, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL and mentions a game hack, likely to entice clicks. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be part of a multi-stage attack where a password-protected archive is delivered, requiring user interaction to decrypt the payload.

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.ru/pify?keyword=baldi%2527+s+basics+hack++android
    • https://cdn.shopify.com/s/files/1/0429/1955/9335/files/xovogobadaxema.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/feduzejud.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2893/files/1980_ford_f100.pdf
    • https://cdn.shopify.com/s/files/1/0440/8557/5832/files/aoe_2_for_android.pdf
    • https://static.usrfiles.com/ugd/0c4177_026737575970478ea834609e2a662863.pdf
    • https://static.usrfiles.com/ugd/909b15_89cecf02293c47a599ef56c1bcd6475e.pdf
    • https://static.usrfiles.com/ugd/10b11f_e099546dc83a4ec781c0af73c0651c55.pdf
    • https://static.usrfiles.com/ugd/fd3290_59aed25c004d4b7ba1846aeedc2163bc.pdf
    • https://static.usrfiles.com/ugd/80bfa9_be72708874a44e50a0671fc521e766d2.pdf
    • https://static.usrfiles.com/ugd/cac9e4_70b91705c5da46d385d44fbab5106bde.pdf
    • https://static.usrfiles.com/ugd/e4ff69_59016dceaeaf4675a2ec62e3118f7697.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_off000065d4.bin
8a3902e98547a1f8ee7a47292b529e46f79ee2acec4883c0c651c0a1599a12b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65D4 5316 bytes
font_01_sfnt_off000077df.bin
d24693053d819ab4f123b371eb267da610411a6bf0c1050dd17b0be734c2b284		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77DF 12576 bytes

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