Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d53caf34c082e51…

MALICIOUS

PDF

37.3 KB Created: 2020-08-25 06:39:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c9cfd0920f96e77fe4868271b46cbe1 SHA-1: 0e806512772897fcb5ff462560e9bb5a06f08f4f SHA-256: 2d53caf34c082e510445a962a49e317e6045f4130fca7c24d9dada4dbf896990
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with a critical heuristic firing indicating a link farm designed to manipulate search engine results. One of the primary links directs to a known malicious redirector. The document's content appears to be obfuscated or corrupted, but the presence of numerous external links, including one to a malicious redirector, strongly suggests a malicious intent, likely for SEO manipulation or distributing further malware.

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=sphax++1.+8
    • http://files.shoptwothreefour.com/uploads/1/3/0/9/130969633/fugasiwelab.pdf
    • http://wugaguno.stpaulnechamber.org/uploads/1/3/2/8/132814930/ea0357ca3ba80.pdf
    • http://sobitef.deeperwaterscounseling.org/uploads/1/3/0/8/130814448/wovowokobenajiwiri.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekerumukin.pdf
    • https://cdn.shopify.com/s/files/1/0436/0817/8845/files/mopobodinobovabolarefax.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9186/files/85900723996.pdf
    • https://cdn.shopify.com/s/files/1/0433/3528/6943/files/2005_lexus_rx330_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9099/2549/files/68599046422.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/46643570785.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8333/files/wusajazaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/66268437835.pdf
    • https://cdn.shopify.com/s/files/1/0437/7709/7886/files/vekixinilab.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/15845188754.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_off000054a6.bin
1972c55f0f26ef6c04e572c691fe770b57b55531000edf7c94a30d059f182a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54A6 5048 bytes
font_01_sfnt_off000065e3.bin
d7b05c577a540cd0296eb07dfd4864db1a6a4f8203f528dd3cacccecca4a4f4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E3 10236 bytes

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