Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2cea4e46af6d12…

MALICIOUS

PDF

44.0 KB Created: 2020-08-07 15:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90990be1b43f8907084f9397df2f5c5e SHA-1: b000f9fe4939ed0db314b66f7f32b61112601f95 SHA-256: 6e2cea4e46af6d12b10b981f376970c8b8b1a992da2208fec4a2ba7c4dc30808
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external PDF files, many of which are hosted on Shopify. One of the primary links directs to a redirector URL, suggesting an attempt to obscure the final destination and potentially deliver malicious content. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=purpose+driven+life+indonesia+pdf+ebook+download+free
    • http://files.1lovesurfing.com.au/uploads/1/3/1/4/131437778/5708563.pdf
    • http://files.flying-flea.org/uploads/1/3/1/6/131606260/9043906.pdf
    • http://files.panisangelicuspress.com/uploads/1/3/1/3/131384018/7094245.pdf
    • http://files.berrow-society.org/uploads/1/3/1/0/131070030/sixelorudoroxa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/kemonarapebowenisi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3280/5527/files/jesavovekan.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/68578308847.pdf
    • https://cdn.shopify.com/s/files/1/0430/6812/9441/files/cambridge_complete_advanced_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/8094/1729/files/kobatujinunaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/71843898253.pdf
    • https://cdn.shopify.com/s/files/1/0432/2010/7424/files/76121729408.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94192334972.pdf
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/lixulamotutowexubuvede.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/wefedemuba.pdf
    • https://cdn.shopify.com/s/files/1/0434/7530/4612/files/46994779736.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/nivebuzemasisaxasuxomi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/87661199718.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e24.bin
c1124e21fe4e04b253134a101c9d3bae58d409404d475688bd80afaf7f024ae5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E24 5392 bytes
font_01_sfnt_off0000809a.bin
b3633d902fcaf68e402f4e68e507deef78a3aa63b40e1e1eb3071e9bb5f87dbd
pdf-font-stream PDF embedded font (sfnt) at offset 0x809A 10032 bytes