Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff8e3673f86f78b…

MALICIOUS

PDF

42.8 KB Created: 2020-08-10 23:40:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b055af279c37e1f7a6b9ede80c56b7e SHA-1: 6d524fc25ad8888dc49941cca4735a0b24f1e1e8 SHA-256: 1ff8e3673f86f78bcfcdbc2f970280c6fedd7cd7bd49313ecfb224c67b2dc8d5
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=score+de+balthazar+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, also contains the primary malicious URL. The combination of these factors strongly suggests the PDF is designed to lure users to malicious content.

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=score+de+balthazar+pdf
    • http://files.vtiise.com/uploads/1/3/1/4/131437593/zogotaretorunuvofe.pdf
    • http://files.freckledyogi.com/uploads/1/3/0/9/130969150/zozituvu.pdf
    • http://kupuzo.summersongmusiccamp.com/uploads/1/3/2/7/132740900/wikise.pdf
    • https://cdn.shopify.com/s/files/1/0439/0476/2011/files/jeketabomuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/jadezewikuse.pdf
    • https://cdn.shopify.com/s/files/1/0440/8632/9509/files/capital_markets_notes.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2666/files/22755879431.pdf
    • https://cdn.shopify.com/s/files/1/0430/7622/3129/files/totanipimozix.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/53173791084.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/44131446561.pdf
    • https://cdn.shopify.com/s/files/1/0431/3936/7061/files/40743423290.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6645/files/pidapanivixaletotojem.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/affairscloud_banking_awareness_capsule.pdf
    • https://cdn.shopify.com/s/files/1/0429/0369/9615/files/jonububodo.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_off00005dc0.bin
4e974be8106ccbe9a206aac902ae07f97dfb51d6202f551d0a8106a1e4d23383		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC0 5360 bytes
font_01_sfnt_off00006ff1.bin
0d0c4987ab12f80923cbee4136a0a9aba73b2277817bb50342dad33669a7747c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF1 15116 bytes

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