Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae673cbefe8ff31f…

MALICIOUS

PDF

43.3 KB Created: 2020-08-17 11:59:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3286bd51a0c743e599a982f77edff90 SHA-1: a9b85dcc33505f89d43373e6e5c6d125cd36e02f SHA-256: ae673cbefe8ff31ff4ce41ec40ece25d75e086d762fbb3b01f22d402c16fca88
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating a phishing or scam attempt. The primary malicious URL, 'https://ttraff.cc/pify?keyword=matanuska+glacier+guided+tour', is designed to redirect users to potentially harmful content. The presence of numerous links, many pointing to Shopify domains, suggests an attempt to obscure the malicious destination or leverage legitimate platforms for distribution. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=matanuska+glacier+guided+tour
    • http://files.susanstandfield.com/uploads/1/3/1/4/131483249/xomefus_tenafa_fogogejuj.pdf
    • http://files.bellcurvededucation.com/uploads/1/3/2/7/132710565/pegibifalukeravabin.pdf
    • https://cdn.shopify.com/s/files/1/0437/0438/5690/files/88734926176.pdf
    • https://cdn.shopify.com/s/files/1/0433/2853/6734/files/fotivimeminovumoka.pdf
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/wufiforipebowugidogodixuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/beetle_bug_3_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/89054136965.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/math_worksheets_for_4th_grade_multiplication.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/43276373840.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/53893500350.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/durapufezadi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/50159900695.pdf
    • https://cdn.shopify.com/s/files/1/0431/0636/9703/files/gamekogaropopone.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_off00006a1d.bin
11b9724df69a0a4efd6b9f36e81fa43c70578b559ed5bfed3e2e9765b37ef858		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1D 5176 bytes
font_01_sfnt_off00007bc0.bin
48de68575b3bf45dca709893d502fa222c01e852219e0190c8473c94a8a514b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC0 10668 bytes

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