Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4b09fa2ed4e5fa8…

MALICIOUS

PDF

37.4 KB Created: 2020-08-13 01:40:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3fa8ece6c988332006a4428402ba19d SHA-1: e0cdc07fbd593a9733a29c7d22c59f845bf53a34 SHA-256: c4b09fa2ed4e5fa880263967049a96e10c5802c0af73bfa776740ee45183106d
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though partially corrupted, suggests a lure for a PDF download. The primary malicious indicator is the redirector URL, which is likely used to funnel users to a malicious site. No scripts were extracted from this sample.

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.ru/pify?keyword=biblia+de+referencia+thompson+en+espa%25C3%25B1ol+pdf
    • http://files.holidayhousesrarotonga.com/uploads/1/3/0/7/130739754/41e2079a22c2.pdf
    • http://files.asalliance.co/uploads/1/3/2/7/132740564/fobivogazeja.pdf
    • http://files.beamwellness.org/uploads/1/3/1/4/131407424/rimojutekugap.pdf
    • https://cdn.shopify.com/s/files/1/0452/4064/7841/files/75944809251.pdf
    • https://cdn.shopify.com/s/files/1/0432/0811/4340/files/78335280423.pdf
    • https://cdn.shopify.com/s/files/1/0433/9548/1750/files/59358073500.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/rawotumegesabitemo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4641/files/vonomoboza.pdf
    • https://cdn.shopify.com/s/files/1/0433/3735/1323/files/27421928129.pdf
    • https://cdn.shopify.com/s/files/1/0431/2226/2167/files/zugeriwozonija.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/dewuxopolavobewupozi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/19285704178.pdf
    • https://cdn.shopify.com/s/files/1/0436/7246/9669/files/dologinavawexo.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_off00004dc2.bin
664cb8be5c474caa27ff1be1e143b16ea3948e71a857289cb9125caf01d4112d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC2 5796 bytes
font_01_sfnt_off000060f3.bin
8a90c549232961a5b5476da29890bdf4686ea10ea0db3695ae15040b2d9f4d8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F3 11568 bytes

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