Malicious PDF — malware analysis report

Static analysis result for SHA-256 f589cbf7d6d5bb27…

MALICIOUS

PDF

47.2 KB Created: 2020-08-07 08:05:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06f5b3df946e8b1d718aeea9c8d89548 SHA-1: e7077c0c781a1a823206dd10cf0aaa0d053c74f4 SHA-256: f589cbf7d6d5bb27ba8d27107364295ccd4282c992d0314e188c70b3bd628e9e
150 Risk Score

Malware Insights

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

The PDF contains a high density of external links, many pointing to potentially malicious redirectors like 'ttraff.cc'. The document body, though malformed, contains text related to 'Boletin informativo' and PDF, suggesting a lure. The presence of numerous Shopify-hosted PDF links, alongside other domains, indicates a link farm designed to obscure the ultimate malicious destination. The primary malicious URL identified is https://ttraff.cc/pify?keyword=boletin+informativo+caracteristicas+pdf.

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.cc/pify?keyword=boletin+informativo+caracteristicas+pdf
    • http://zokuzo.complab25.com/uploads/1/3/1/3/131384635/xepozulawufukoxam.pdf
    • http://files.keystone-equestrian.com/uploads/1/3/0/8/130814411/587e2ce69aae30f.pdf
    • http://paduko.mvcatching.com/uploads/1/3/2/7/132712615/3a7a4d0d6660.pdf
    • http://files.studio59live.com/uploads/1/3/0/8/130874489/fezadojik-loduker.pdf
    • http://files.cooksvillesaicentre.com/uploads/1/3/1/6/131606121/b89d609.pdf
    • https://cdn.shopify.com/s/files/1/0434/5682/3453/files/giorgio_caproni_poesie.pdf
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/gozimokibuzim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/lapabedeze.pdf
    • https://cdn.shopify.com/s/files/1/0439/1868/8424/files/61784295202.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/billie_jean_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/zuximodopidoxem.pdf
    • https://cdn.shopify.com/s/files/1/0444/3809/3990/files/ansys_apdl_tutorial_for_composite_materials.pdf
    • https://cdn.shopify.com/s/files/1/0436/0149/4179/files/3x3_oll_algorithms.pdf
    • https://cdn.shopify.com/s/files/1/0446/6468/4697/files/agile_project_management_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0432/1063/7476/files/tazawinivujepufevu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5829/files/ascent_of_sap.pdf
    • https://cdn.shopify.com/s/files/1/0435/0764/6630/files/beaumont_tx_traffic.pdf
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/sasuketigesozuwebobatov.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_off0000775e.bin
99af2a629a3e267368a758bc44500f21b4fb98d6747fb52805c98965d67af3a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x775E 5412 bytes
font_01_sfnt_off000089b5.bin
7ccb7f8af2cf61d6c7bb0a0a4b08d191d79bb7861145faeafd65a983a1c5b838
pdf-font-stream PDF embedded font (sfnt) at offset 0x89B5 11212 bytes