Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0e9b0191eaaec7…

MALICIOUS

PDF

68.9 KB Created: 2020-07-28 17:38:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3e8ad8e3fb1033622f88f5f8d02b17c SHA-1: 8846d5405d1bf6aaca99ddfe0a202d4cbc7cc0d4 SHA-256: 3a0e9b0191eaaec77bae7fba1a75da6c2c04564bfe93cc4db93b4b211e8a874b
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. Another heuristic flags a link to a known malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the sheer volume of outbound links suggests a malicious intent, likely for SEO manipulation or to funnel users to 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=maintenance+page+template+bootstrap
    • http://files.teamgerbs.com/uploads/1/3/2/3/132302910/folekelapelu_gajefowi_narubasaderevaj_fubojif.pdf
    • http://files.raphastar.com/uploads/1/3/0/7/130775918/81aa9810fbb3.pdf
    • http://files.jandgguns.com/uploads/1/3/0/8/130874207/1b2c7.pdf
    • http://files.silverbackpacking.com/uploads/1/3/1/6/131636956/7784532.pdf
    • http://files.nyelaw.org/uploads/1/3/1/6/131636632/wazinibofoluwij-xoxazoxow-sedisi-pitinavemiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/5258/1542/files/18149724571.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0434/3031/4151/files/64152517912.pdf
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/25105425214.pdf
    • https://cdn.shopify.com/s/files/1/0434/8418/4728/files/46540259924.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3282/files/xuguxugafukoponapejil.pdf
    • https://cdn.shopify.com/s/files/1/0432/5054/8899/files/50524200541.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29331550606.pdf
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/dunufogubikuv.pdf
    • https://cdn.shopify.com/s/files/1/0430/6187/0741/files/bonelupevulabe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2521/0263/files/ronalamajexawogozow.pdf
    • https://cdn.shopify.com/s/files/1/0437/0916/9815/files/vukafuwixegojawapuna.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/4796570030.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gifizazuxapi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7135/7596/files/sadeporuwedasuxapeguf.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/files/1/0430

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad6e.bin
906b96f23c18c82b54e56679a44faf4d3130dcd7b60435182ce5a53f9585c9e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD6E 5184 bytes
font_01_sfnt_off0000bee7.bin
f9551408fd7ee77280e66d125bcdec086f3a30a1b433bcf06b0d4f4753c56725		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEE7 14372 bytes
font_02_sfnt_off0000ec6c.bin
d0644663986ebbb812f7c2ba20ce6348cfa331a3ca32e70c41a12a21f1cf199f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6C 17200 bytes

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