Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0831fbe1c8b3c8a…

MALICIOUS

PDF

44.3 KB Created: 2020-07-30 08:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e4705f0af7c999beb0d9235d2eafef6 SHA-1: b8ac0ccbcf7d52fbe02f59359eea0bb9ce3a9c07 SHA-256: a0831fbe1c8b3c8ad8f350c73368fbfdc19b848cde77cbe2257ddb77d29d95cc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which are hosted on Shopify and appear to be part of a link farm designed to obscure malicious activity. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'worksheet pdf', likely a lure. No scripts were extracted from this sample.

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=someone+anyone+no+one+worksheet+pdf
    • http://files.gabbyspetsitting.com/uploads/1/3/1/0/131070718/9400702.pdf
    • http://files.amsauaj.com/uploads/1/3/0/8/130813931/lefifanowu_kixabipanef_xixobalepizegib.pdf
    • http://files.markbrandi.com/uploads/1/3/1/6/131606605/43731.pdf
    • https://cdn.shopify.com/s/files/1/0431/4031/7335/files/valuvuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/4539/6386/files/73169990152.pdf
    • https://cdn.shopify.com/s/files/1/0433/4315/1272/files/36340404012.pdf
    • https://cdn.shopify.com/s/files/1/0433/7732/8286/files/fozavatul.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/56173078434.pdf
    • https://cdn.shopify.com/s/files/1/0428/5317/1356/files/91734492540.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/salidodajozaresafonal.pdf
    • https://cdn.shopify.com/s/files/1/0432/8688/8612/files/83853477994.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/vulixobizitatimi.pdf
    • https://cdn.shopify.com/s/files/1/0438/2123/6384/files/nonugaralanukitawukil.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/fazixisewuzujopezujamop.pdf
    • https://cdn.shopify.com/s/files/1/0430/3981/7890/files/55531936777.pdf
    • https://cdn.shopify.com/s/files/1/0436/3619/5488/files/nubabenukavevovuboj.pdf
    • https://cdn.shopify.com/s/files/1/0428/7712/4764/files/bokadelanamajotitegeled.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_off00006f40.bin
520fbfd99c80c0e1c88af57faf09c54596eed07af9db485e086f9250bfe94319		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F40 5352 bytes
font_01_sfnt_off0000814c.bin
d0c0b442b02c3d59a309afa5d2988f794f4ba7a80b01306528ed1fde85d7f432		 pdf-font-stream PDF embedded font (sfnt) at offset 0x814C 10068 bytes

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