Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd93b0bfe29a8f77…

MALICIOUS

PDF

55.5 KB Created: 2020-08-02 08:42:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3d331dcf383b120c0e1c992e24b16e8 SHA-1: 71e1504ae45b0c60b4e2f99625bacd86b0a1c71a SHA-256: cd93b0bfe29a8f774ab8a74a77aa137a3033938f8ee1c4e4b28909bafa2215d1
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The heuristic firings indicate this PDF is designed to host a link farm, likely for SEO manipulation or to distribute malicious content. The primary malicious IOC is the redirector URL, which is likely used to funnel users to further malicious sites.

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=discovering+the+lifespan+pdf
    • http://files.richkirch.com/uploads/1/3/0/7/130775840/rijuzera-raxezuvobafope.pdf
    • http://files.ridgefieldgirlscouts.org/uploads/1/3/1/4/131407704/6054720.pdf
    • http://files.dandressler.com/uploads/1/3/1/1/131164063/gikonelebumodijomot.pdf
    • https://cdn.shopify.com/s/files/1/0439/7491/8302/files/75620706192.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4826/files/vabavojunivofibuxabedu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/nububojozejokogujebi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/donkey_kong_country_gba_rom.pdf
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/8387021563.pdf
    • https://cdn.shopify.com/s/files/1/0434/8516/7766/files/56467948694.pdf
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/acnl_item_ids.pdf
    • https://cdn.shopify.com/s/files/1/0439/1131/5611/files/21055011803.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/vitegafuragizurir.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/90319358066.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_off00009aa3.bin
d7494b467a1f2cec5264c569386ef0e706e1721086ad7c8e934b8eba23f78c2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA3 5476 bytes
font_01_sfnt_off0000ad4d.bin
762f4f6690e605e0d54fc3b2a922a765217f7e897d87f919b429aca1a9dfd931		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD4D 10484 bytes

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