Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a68f45b8cffbfaf…

MALICIOUS

PDF

45.0 KB Created: 2020-08-02 00:54:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25ab6b643985c8a1293fe66edd9f77ed SHA-1: df23663b6d47417f661a234f2486d18194f47386 SHA-256: 3a68f45b8cffbfafb980b72a283cac4604772b97290a8351129319038dd7f766
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, 'https://ttraff.cc/pify?keyword=cyber+monday+2016+iphone+7', disguised as a deal for an iPhone 7. This indicates a social engineering lure designed to redirect users to a potentially harmful site. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=cyber+monday+2016+iphone+7
    • http://files.lissalubinskimd.com/uploads/1/3/1/3/131398504/af8db738a593.pdf
    • http://files.mansouraudit.com/uploads/1/3/2/7/132710783/josebotalibunib-veloxidom-rixixoka-bejuvimavagat.pdf
    • http://files.love2bfitworkout.com/uploads/1/3/1/8/131856713/lakonu.pdf
    • http://files.meyrickestates.net/uploads/1/3/0/7/130776388/xojoti_runeriwodowesi.pdf
    • http://files.audacitycoffeeroasters.com/uploads/1/3/0/9/130969334/4027543.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/78682738330.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/11905865377.pdf
    • https://cdn.shopify.com/s/files/1/0437/2840/4632/files/dorumet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2273/6798/files/69177933516.pdf
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/59992690887.pdf
    • https://cdn.shopify.com/s/files/1/0434/5744/6041/files/devuxagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5157/files/12538285814.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/81458869953.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/87335587323.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/fusalexudutim.pdf
    • https://cdn.shopify.com/s/files/1/0434/4188/1254/files/tepizafavatawepizemuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/0636/0725/files/51024745267.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_off000061e6.bin
859f93b8b75e5afe2230cea85e72b604c0b3e81cc07a677d1a3a98ff48854811		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E6 5524 bytes
font_01_sfnt_off00007478.bin
d93e894e0a69641287b1506408c9a71f7579f7b61568846b55f9f4779177156f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7478 10620 bytes
font_02_sfnt_off000098c5.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98C5 4324 bytes

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