Malicious PDF — malware analysis report

Static analysis result for SHA-256 31fb2892f3245b4b…

MALICIOUS

PDF

45.3 KB Created: 2020-08-25 13:48:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86224d120e1f203d6db53d799d132059 SHA-1: 9991ddf711ecf8696b799267e44303cfe32ff808 SHA-256: 31fb2892f3245b4ba18379881f1f2f062f8101a18eb1c6d660baa7f7abb6c67f
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=whatsapp+plus+apk+for+android'. This indicates the document's primary purpose is to redirect users to external sites, likely for malicious downloads or phishing. The presence of a PDF link farm further supports the malicious intent, as it suggests an attempt to artificially inflate the perceived legitimacy or reach of the linked content. No scripts were extracted from this sample.

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=whatsapp+plus+apk+for+android
    • http://xonivaw.lqcolour.com/uploads/1/3/1/4/131453293/51acad47e62.pdf
    • http://files.heronheron.com/uploads/1/3/1/6/131606923/zapol.pdf
    • http://buxugij.raydogsbatrolling.com/uploads/1/3/1/4/131453215/6043992.pdf
    • http://files.wormfoodforthough.net/uploads/1/3/0/9/130969243/e9c22e71c4f8.pdf
    • https://cdn.shopify.com/s/files/1/0431/5391/6053/files/35908913964.pdf
    • https://cdn.shopify.com/s/files/1/0447/4689/9607/files/yamaha_outboard_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0527/0437/files/vejazov.pdf
    • https://cdn.shopify.com/s/files/1/0429/3849/9235/files/fufibipijiporituw.pdf
    • https://cdn.shopify.com/s/files/1/0434/7658/2552/files/6806298685.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/tumor_angiogenesis_therapeutic_implications.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/30210177290.pdf
    • https://cdn.shopify.com/s/files/1/0431/0633/6930/files/14048120652.pdf
    • https://cdn.shopify.com/s/files/1/0437/2230/9786/files/koxexilosugalofa.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_off00007325.bin
9614b911ecd05b24f14a99a83a70fa38ef3edbf3b66319af715bc3a88d6d8c3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7325 5204 bytes
font_01_sfnt_off000084e0.bin
a21c50c01cf5202bbd5ee730be9ffa72d43db9fa0b148d3a2418c46c01f66d33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E0 10468 bytes

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