Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd976e51b3e8d038…

MALICIOUS

PDF

50.5 KB Created: 2020-08-07 14:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95bd0e18d5f91852f3fe3aeb48f7c1a4 SHA-1: 6b48a143118529f75001b3586c935d0bd2925569 SHA-256: cd976e51b3e8d038f8b74fb9279fc8708f181b5cb16a6e5115dddc6e216a51b1
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. One of these links, https://ttraff.ru/pify?keyword=what+is+unicast+multicast+and+broadcast+in+networking+pdf, is flagged as a malicious redirector. The document body itself is heavily obfuscated and contains what appears to be junk data, but the presence of the malicious redirector and the link farm strongly suggests a malicious intent, likely for SEO poisoning or redirecting users to malicious sites.

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=what+is+unicast+multicast+and+broadcast+in+networking+pdf
    • http://files.mse2opiodepidemic.com/uploads/1/3/1/4/131453718/3c70460122d7.pdf
    • http://risadas.tfdonaldson.com/uploads/1/3/2/6/132682646/jajotabidajolomi.pdf
    • http://files.youandyourcareer.org/uploads/1/3/0/7/130775448/0d44f.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/83878268993.pdf
    • https://cdn.shopify.com/s/files/1/0450/9810/7045/files/the_kawai_complex.pdf
    • https://cdn.shopify.com/s/files/1/0429/7087/4009/files/mowakefesatenolalitopago.pdf
    • https://cdn.shopify.com/s/files/1/0434/1740/3559/files/rorufufogigolajege.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3435/files/jekejuwesebe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5624/files/tuget.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/43406795801.pdf
    • https://cdn.shopify.com/s/files/1/0436/3547/4590/files/bazuzerakut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nanejixiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/3568/1180/files/fuwawodebijilasali.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_off00008661.bin
aeaa5eacac598ce1aa8a96f68715a9f1a657a1a18cb58a18f263f5cb05707835		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8661 5880 bytes
font_01_sfnt_off00009a4d.bin
6a64fcadfd7db3a7f843129fd8f1f7fe8b191bedc8078ea35ef2884f23f4da12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4D 10096 bytes

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