Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d8bead8190d430…

MALICIOUS

PDF

45.0 KB Created: 2020-08-18 22:06:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8de5e93b1a4ea76ca132c5276606c3c SHA-1: 8a53759fd971b10ab27aaaedaa2bff4c82890150 SHA-256: 32d8bead8190d4307287dbc72f3c67d8767449087ce094bfd3777e089f93d0b8
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to shopify.com domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a phishing or social engineering attack, likely aiming to redirect the user to a malicious site. The document body, though heavily obfuscated, contains the phrase "Gcta manual philippines" and the malicious URL, reinforcing the lure. No scripts were extracted, limiting the analysis of direct payload execution.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=gcta+manual+philippines
    • http://files.foxmanager.co.uk/uploads/1/3/0/9/130969744/eb2c6dd62473f.pdf
    • http://files.waxedbylaurie.com/uploads/1/3/1/6/131606866/6b09d0ef70627.pdf
    • http://wobodim.ashdowndrivewayssurfacing.co.uk/uploads/1/3/0/9/130969772/9323232.pdf
    • http://kabidajo.slocampnpack.com/uploads/1/3/1/6/131637136/pikesavekazuba_gefegeguwoz_nurepamavifagig_puwalovafaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/48428783539.pdf
    • https://cdn.shopify.com/s/files/1/0428/6044/5855/files/46487305974.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/bixodosifig.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/fewanisafabazuraganivagak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jokopewizemaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/8443/2038/files/binomial_distribution_table_edexcel.pdf
    • https://cdn.shopify.com/s/files/1/0438/5082/5893/files/mysql_commands.pdf
    • https://cdn.shopify.com/s/files/1/0434/5937/9357/files/5862303857.pdf
    • https://cdn.shopify.com/s/files/1/0439/3258/2056/files/aprender_italiano.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9942/files/satin_bonnet_pattern.pdf
    • https://cdn.shopify.com/s/files/1/0438/0780/1504/files/stages_of_curriculum_development_process.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_off00007299.bin
aed68ad14ae82e4abb402616ec66ffd28d916dfa56006c293f78d6721af087fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7299 5108 bytes
font_01_sfnt_off000083ce.bin
e09344757be15ed6cdbfec650abfe858858e57ed602494f36bf7b8df8eb20d38
pdf-font-stream PDF embedded font (sfnt) at offset 0x83CE 10252 bytes