Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac26c4c26c7bfd43…

MALICIOUS

PDF

51.5 KB Created: 2020-08-10 02:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf6ba733eac58cf8162e6ceedcf27a43 SHA-1: aaeeb09a0857ccf0bdb2880228242874c70fec64 SHA-256: ac26c4c26c7bfd439fa2b2636317faa3189cfac7a8b4a60378cb50f5c6b580dd
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to accounting rules, which is a common tactic for phishing or malware distribution. It embeds numerous links, with one specifically pointing to a known malicious redirector infrastructure at 'ttraff.com'. This suggests the document's primary purpose is to redirect users to malicious sites, likely to download further malware or steal credentials.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=golden+rules+of+accounting+in+gujarati+pdf
    • http://molovoma.academyofhirudotherapy.org/uploads/1/3/2/8/132814930/ditiso_ruxazeluxiluzem.pdf
    • http://files.lexphotoscan.com/uploads/1/3/0/9/130968984/d23bb68608.pdf
    • http://files.dungeonchunks.com/uploads/1/3/2/3/132303373/xapokalis-banemav-vigotixoxax.pdf
    • http://files.coopercatgallery.com/uploads/1/3/2/7/132740260/puparif.pdf
    • http://files.sharasahenley.com/uploads/1/3/1/4/131453355/3969234.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/alternative_tourism_definition.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2174/files/low_cholesterol_diet_plan_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0434/8330/0005/files/47580161424.pdf
    • https://cdn.shopify.com/s/files/1/0439/2773/2379/files/61698786696.pdf
    • https://cdn.shopify.com/s/files/1/0432/8233/3864/files/murumodivoxuwitaven.pdf
    • https://cdn.shopify.com/s/files/1/0436/3055/9390/files/xegifegomigakaxizo.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/98628395313.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/8328635072.pdf
    • https://cdn.shopify.com/s/files/1/0430/8955/9705/files/supolubusikip.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6841/files/zebogururolobuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38970143778.pdf
    • https://cdn.shopify.com/s/files/1/0431/5440/7578/files/caracteristicas_del_materialismo_dialectico.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_off000069f7.bin
f1f7180bb2af2a078704f05e882fc05558fc830f153fa7763d328e3fe15ef198
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F7 5432 bytes
font_01_sfnt_off00007c8b.bin
cc86a3e586007e274c48e63649d80e0c938ad3e2034f9c9df54acac221128eee
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8B 15248 bytes
font_02_sfnt_off0000abca.bin
2a726e4d8e078a4a4a6a0bed67b139344cab8167eb027720faf42c08020076b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xABCA 16120 bytes