Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1450ab1da45c1d…

MALICIOUS

PDF

33.6 KB Created: 2020-08-30 16:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a05b2c5404ecb703811b38c344697517 SHA-1: 14ed86643284ecbd9bcb228d9af4b0b369f9200b SHA-256: 3e1450ab1da45c1d4affc2b308c83ba485a2d8e03230ecdd751a7a6f6b86e0f7
150 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, identified as a PDF link farm. One of these links, https://ttraff.cc/wix?keyword=telugu+pdf+boothu+kathalu, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.cc/wix?keyword=telugu+pdf+boothu+kathalu
    • https://static.usrfiles.com/ugd/be19e1_97f130943bfc424894dfd79779375131.pdf
    • https://static.usrfiles.com/ugd/7f46b5_4e8fcd1cd121499181e1e25a3adc70fe.pdf
    • https://static.usrfiles.com/ugd/6cfc61_c2ce30635c0b41b38a1a391dd9d18d82.pdf
    • https://static.usrfiles.com/ugd/906e9f_5ab63ff8c34e4c6c942689f9c8ef3016.pdf
    • https://cdn.shopify.com/s/files/1/0435/5604/4955/files/hypoglycemia_guideline_malaysia.pdf
    • https://cdn.shopify.com/s/files/1/0432/0785/2192/files/83400295990.pdf
    • https://cdn.shopify.com/s/files/1/0443/1472/2460/files/raif_badawi_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2197/5197/files/nowiraredovuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/5419/4085/files/15384514296.pdf
    • https://static.usrfiles.com/ugd/c6ac46_77e92923726b44dcae3a50eae3854539.pdf
    • https://static.usrfiles.com/ugd/87a178_cb103282caa244cb844d534b220912f2.pdf
    • https://static.usrfiles.com/ugd/4ae4db_4ec121a608f14c5ab6648783e6974067.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_off0000479c.bin
3fd6fc233c829e57b596dd6576b89326723a66b956aa7c431fffc4b46b2daad1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x479C 5180 bytes
font_01_sfnt_off00005933.bin
02ab4a342d9e97e8f4e7e8ff0b9768cc5685d429f93f545418c25db5014cf15c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5933 9620 bytes

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