Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc818267dafb91d4…

MALICIOUS

PDF

38.6 KB Created: 2020-08-26 07:51:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9da9bd7286c2b2a5a16989e12ee8a632 SHA-1: abdccfca73a3ac5de093bc9643bade75f14e22c2 SHA-256: dc818267dafb91d4c59ef04332dc8c31aa760bd27939731f3bd892fce0b6b4ce
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily corrupted, contains text related to 'Majora's mask 3ds guide pdf download' and the malicious URL, suggesting a lure to trick users into downloading potentially harmful content. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to known malicious infrastructure.

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.club/pify?keyword=majora%252527s+mask+3ds+guide+pdf+download
    • http://files.gilchristwhatnot.com/uploads/1/3/1/8/131856991/wepesebenemitaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/zujezogub.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/singer_quantum_stylist_9960.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/livanele.pdf
    • https://cdn.shopify.com/s/files/1/0440/7925/1608/files/16121117192.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8458/files/vazirofimixivamoli.pdf
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/wofof.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/24690218120.pdf
    • https://cdn.shopify.com/s/files/1/0452/7469/3794/files/35165865099.pdf
    • https://cdn.shopify.com/s/files/1/0438/5298/8566/files/lamentations_of_jeremiah.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000498d.bin
2211a68ef78584942e9ad4a379483ea6957a12cab353aca02f12670d8e8e3007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x498D 5600 bytes
font_01_sfnt_off00005ca9.bin
ab25df03a7d179e9b109246f313ae75974beae105b00f7cac71768f74914b320		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA9 10176 bytes
font_02_sfnt_off00007f7c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F7C 4324 bytes

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