Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd8b718d947bd165…

MALICIOUS

PDF

50.7 KB Created: 2020-08-24 20:56:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8751d52d1c2c9d29937d207a46d8d097 SHA-1: f38b50bdecf750a78b1f0b4e9365db8ee7932f8b SHA-256: bd8b718d947bd165685ca6c19d47f7ee7b0144acf4b9a9e7b21656e0f58b6709
120 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, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.ru/pify?keyword=analytical+thinking+pdf+book', is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect users to malicious content under the guise of a book download.

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=analytical+thinking+pdf+book
    • http://files.lot514.com/uploads/1/3/0/7/130775402/dimirejotekiz-gaxifas.pdf
    • http://files.blowingsmokebbq.com/uploads/1/3/1/3/131384025/rudimatemeko.pdf
    • http://files.roxieriverawriter.com/uploads/1/3/1/3/131378771/ripib.pdf
    • http://files.cutofnova.org/uploads/1/3/1/3/131379761/xegukuwusak_fepivavamere_wasajisive.pdf
    • http://pubofuton.pro-mx.com/uploads/1/3/0/7/130739626/2da491.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9600/files/gilazerusedutiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/plus_or_minus_symbol_word.pdf
    • https://cdn.shopify.com/s/files/1/0430/9070/6599/files/exercices_corrigs_sur_les_amplificateurs_oprationnels.pdf
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/kinujizulowume.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/retipupobugonaxovexet.pdf
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/integral_calculus_work_problems_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/59559727513.pdf
    • https://cdn.shopify.com/s/files/1/0428/8262/9798/files/schindler_s_list_violin_duet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7417/files/fedegazurete.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/64652867623.pdf
    • https://cdn.shopify.com/s/files/1/0431/7403/5607/files/96163337464.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_off000088e8.bin
77615f3bf607bbb7961158ca6b0953c9a51be71be673dba54c7981ca203adbe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88E8 5436 bytes
font_01_sfnt_off00009b63.bin
a87d0800f4816b9ea50d16cf874ee06e7c10d543d8ab9e98ee2b7b6ffc8765a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B63 10020 bytes

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