Malicious PDF — malware analysis report

Static analysis result for SHA-256 889eff66d25f047d…

MALICIOUS

PDF

53.0 KB Created: 2020-08-10 08:17:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d7a56f0341a223b856fff5619901390 SHA-1: 88f8cd010e294972ba93bb2b9a0ac0609ffa6349 SHA-256: 889eff66d25f047de037432eb9184c8ac23d9a5e9bbf85359e3239fb24705855
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 external PDF files hosted on Shopify and other domains. One critical heuristic indicates a malicious redirector link to 'ttraff.cc', which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'Suprema biostar 2 manual pdf', suggesting a lure to trick users into downloading or accessing malicious content.

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/pify?keyword=suprema+biostar+2+manual+pdf
    • http://vumelavo.anarchistindex.com/uploads/1/3/0/8/130814297/fepejebika_xukoboviwefo_kinosaruzepisir_mowupekuxeku.pdf
    • http://fojurerur.jmagalskiphotography.com/uploads/1/3/0/9/130969656/sebewoto.pdf
    • http://files.miainthelight.net/uploads/1/3/1/0/131070398/3d6face3.pdf
    • http://files.albertacriticalcaretraining.com/uploads/1/3/2/6/132681030/7112481.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/bomamogugugasufopiluzere.pdf
    • https://cdn.shopify.com/s/files/1/0431/0227/3703/files/57080291516.pdf
    • https://cdn.shopify.com/s/files/1/0437/9423/5553/files/bofiwatoselimazateruvojo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0804/files/ligojodelomisagosamedu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4965/files/american_heart_association_bls_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/pdf_magazine_reader_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/59114612238.pdf
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/21615598530.pdf
    • https://cdn.shopify.com/s/files/1/0429/4311/9527/files/el_imperativo_categorico.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/39892796627.pdf
    • https://cdn.shopify.com/s/files/1/0433/6310/6968/files/bofurote.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/86748441765.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_off00008194.bin
24e5df8bc87bd336556930721034e912fbe863e05804b94c2f6ad56c29199927
pdf-font-stream PDF embedded font (sfnt) at offset 0x8194 5444 bytes
font_01_sfnt_off000093ef.bin
06b26d35ef149d244675f5b621963b8b6eb03deac629c015d8c501119f0025d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x93EF 10932 bytes
font_02_sfnt_off0000b902.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB902 4324 bytes