Malicious PDF — malware analysis report

Static analysis result for SHA-256 4852c4b2d3d7fcce…

MALICIOUS

PDF

51.9 KB Created: 2020-07-31 13:00:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a84f3c4d61f0ab251f97dc42236a203f SHA-1: 158e05eb0e3e2fec2727bb5667de382517298be4 SHA-256: 4852c4b2d3d7fccec9e263b5c3cf8788b94a26ea3ecf485236b8a0e02107d14f
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating the document's primary purpose is to lure users to malicious sites. The 'PDF_SEO_LINK_FARM' heuristic suggests a large number of outbound links, likely for SEO manipulation or to obscure the malicious destination. The ML classifier strongly supports the malicious nature of the PDF.

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=how+to+overcome+barriers+of+effective+communication+pdf
    • http://files.daintydivasdancewear.com/uploads/1/3/1/3/131378950/tosovob.pdf
    • http://files.orderlypackrat.com/uploads/1/3/1/4/131483440/luvudu_tovireduxila_renanesebex_bemomewurija.pdf
    • http://files.mrshaolebrownie.com/uploads/1/3/1/4/131437087/5294102.pdf
    • http://files.wolfambassadors.com/uploads/1/3/0/7/130775806/5763b9654d.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3267/files/komunudiguvo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdf
    • https://cdn.shopify.com/s/files/1/0428/2315/5878/files/faseragawerel.pdf
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/vigepavokevuparedibij.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3026/files/39208108995.pdf
    • https://cdn.shopify.com/s/files/1/0431/9107/4976/files/90839090275.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/76350606481.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/63466821628.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9303/files/serinoxanikefepido.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/65487509879.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/sezalafif.pdf
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/bolepefa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1481/5901/files/8680013280.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/
    • https://cdn.shopify.com/s

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d8a.bin
535364222e306e494c0950929e49895fd160526b19c791968506f57312429076		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8A 5404 bytes
font_01_sfnt_off00009fdc.bin
8ce82f61ff2d3ce3620abc76dc316eab7fbdabdb34f2954fe13e98b2bba486dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FDC 9904 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.