Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e18fa6a53d9b5c6…

MALICIOUS

PDF

48.2 KB Created: 2020-08-09 01:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 996445a751b4a6a637e02252b8fb879e SHA-1: e48df16967a3ddebe7a00473cfb1d893099de36e SHA-256: 3e18fa6a53d9b5c63e339f476a8927d83005e197fc98ec1692f0660cc6d61fc6
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to the Paris Climate Accord, suggesting a lure. The embedded link in the PDF's object stream also points to this malicious redirector, which likely serves as a gateway to further malicious content. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content.

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.com/pify?keyword=acuerdo+climatico+de+paris+pdf
    • http://lajagur.realhelpconsulting.com/uploads/1/3/1/3/131398560/bikavevedogo-pefibodobuji.pdf
    • http://files.kikapoosphynx.com/uploads/1/3/1/4/131437276/3001ef2c8e7396.pdf
    • http://files.promisewed.com/uploads/1/3/1/4/131437276/jegur-wajokumitomu-xovegiposisafi-rebekuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pejolezogumulugadajo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3885/files/duzigiwis.pdf
    • https://cdn.shopify.com/s/files/1/0433/5943/6951/files/zunokovupoguvuxosezifom.pdf
    • https://cdn.shopify.com/s/files/1/0449/1057/5771/files/trade_barrier_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/robenu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3887/files/88310682282.pdf
    • https://cdn.shopify.com/s/files/1/0438/4253/5574/files/32745619627.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8688/files/after_study_novels.pdf
    • https://cdn.shopify.com/s/files/1/0435/1731/3176/files/nifopuzesukofumiguriwafa.pdf
    • https://cdn.shopify.com/s/files/1/0431/1921/4756/files/xomigipokipubilemekidano.pdf
    • https://cdn.shopify.com/s/files/1/0435/9349/8787/files/rogue_5e_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/2992/0930/files/prevenir_cancer_de_mama.pdf
    • https://cdn.shopify.com/s/files/1/0431/5797/9304/files/pujobe.pdf
    • https://cdn.shopify.com/s/files/1/0433/2175/3758/files/16124952918.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_off00007b55.bin
b6aec03729c533bdbfb1c8ae07a38a1b62d87befcd415d6fe76443196e93e6d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B55 5288 bytes
font_01_sfnt_off00008d36.bin
dabec045f89e823a0630f225de1b0cce0de7c55cdf109ed95f3630d322fb01ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D36 11268 bytes