Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bef3076d314e609…

MALICIOUS

PDF

53.3 KB Created: 2020-08-21 16:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c42304334f115a778a8b956ddbfc4c6f SHA-1: 457b92aff3eb1f0d536b10744c1cee32e6ad0a1e SHA-256: 2bef3076d314e609b45d49671b5bdfa92f46d75a7f7bb6cfd3ec0ec3f7bba468
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=actos+de+comercio+libro+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure.

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.com/pify?keyword=actos+de+comercio+libro+pdf
    • http://files.standrewsroswell.com/uploads/1/3/1/4/131406840/nuxaxor_vokiru.pdf
    • http://files.huntingdonbedandbreakfast.com/uploads/1/3/1/4/131452958/tokuwoxu_veselelolabot.pdf
    • http://petivimit.childemotionregulationlab.org/uploads/1/3/0/7/130775565/gasepavurilum.pdf
    • http://files.neisdoap.com/uploads/1/3/2/3/132303378/4333660.pdf
    • http://zemadazol.eadhabread.com/uploads/1/3/0/9/130969149/sikatawudor.pdf
    • https://cdn.shopify.com/s/files/1/0435/2072/1055/files/biblia_ya_kiswahili_agano_jipya_na_la_kale.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/fipife.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/nojaroxuforuz.pdf
    • https://cdn.shopify.com/s/files/1/0440/4514/0118/files/73324717929.pdf
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/madupogutipup.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/pisawupezo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/silurusepafalatiniwewaki.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/fokavonosonotap.pdf
    • https://cdn.shopify.com/s/files/1/0429/7339/7145/files/sudabokabarezur.pdf
    • https://cdn.shopify.com/s/files/1/0448/4582/6205/files/bhagavad_gita_stephen_mitchell_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8234/0770/files/magi_the_kingdom_of_magic.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_off00007cb0.bin
ca9a824c0d97c8df200aa9f257e95f9aa8d40f750d3b77cc0cf01841a79b22d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB0 5220 bytes
font_01_sfnt_off00008e4b.bin
10ec02fd6d630cf0e56bdcdbbb0e9d230e8e50df6c1bff6f83ba59b8907d9533
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4B 10820 bytes
font_02_sfnt_off0000b17b.bin
b67cbb8e18f25db78dc5224b2fcadc330409e4987dee2a84b3505743999eb4ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xB17B 16076 bytes