Malicious PDF — malware analysis report

Static analysis result for SHA-256 f17d4d06ef806723…

MALICIOUS

PDF

47.3 KB Created: 2020-08-27 15:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4158560d76a7290134ba93f7591e249 SHA-1: a8ddfc58b2b9a58e5fc91f57ef8999154d39cffe SHA-256: f17d4d06ef8067238a4679884c4047835407ed635f84cc02072d195c927ba72f
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=the+strength+training+anatomy+workout'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious redirector URL, suggesting the primary intent is to drive users to this malicious site.

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.me/pify?keyword=the+strength+training+anatomy+workout
    • http://files.scs99.com/uploads/1/3/1/0/131070971/9511929.pdf
    • http://redixu.oliveleafhomes.com/uploads/1/3/1/3/131380739/db0a78b917e.pdf
    • http://bonaneve.helenaylong.com/uploads/1/3/1/8/131856380/vilinebafujojub.pdf
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/axelos_itil_4_foundation.pdf
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/nufafutal.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/sizetibelanexawu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9997/9930/files/muwewadek.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/bunimeguminosapijibo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1750/0834/files/mamawijuzusaboxejewas.pdf
    • https://cdn.shopify.com/s/files/1/0445/8987/5364/files/ca_dmv_bill_of_sale_form.pdf
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/47875286014.pdf
    • https://cdn.shopify.com/s/files/1/0436/4166/7734/files/90586918027.pdf
    • https://cdn.shopify.com/s/files/1/0431/7023/4524/files/40082548236.pdf
    • https://cdn.shopify.com/s/files/1/0431/6296/0023/files/32115366505.pdf
    • https://cdn.shopify.com/s/files/1/0454/4741/3910/files/class_11_ncert_accountancy_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5752/8480/files/rorufalad.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/26875145969.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006db5.bin
98a33b2cd8c9db24dd25240b6672c1588fc6a6d0f1138bc23c2e2e39809cb7a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB5 5156 bytes
font_01_sfnt_off00007f21.bin
1d8f9af1b51308fe12838daa2054b931e79a742c90e1b788e9b9d60e2ba44d2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F21 10072 bytes
font_02_sfnt_off0000a19d.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0xA19D 4324 bytes