Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9dce5fc3fefcc2…

MALICIOUS

PDF

58.3 KB Created: 2020-08-16 14:53:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59343263283f699633e25199d85595a4 SHA-1: cf23f157e3a8a306d42b1f3a216d41328559f75e SHA-256: ed9dce5fc3fefcc20062b5cf5d891e5d241a4f9d5827ebc320b7c59bb11fdade
148 Risk Score

Malware Insights

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

The PDF file contains embedded links that lead to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains text suggesting it's a lure for 'Allegheny county department of real estate forms', aligning with the 'SE_INVOICE_LURE' and 'SE_CALLBACK_LURE' heuristics. The presence of a link farm further indicates malicious intent to distribute further content.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=allegheny+county+department+of+real+estate+forms
    • http://files.paulbq.com/uploads/1/3/2/7/132710624/3175095.pdf
    • http://files.filmedthere.com/uploads/1/3/1/4/131437438/lojebebugade-kudexasa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/zetatisoledobobolotinu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/votevoxezubi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wifufokamavobopizevotug.pdf
    • https://cdn.shopify.com/s/files/1/0437/8394/6397/files/aumento_de_capital_por_incorporao_de_reservas.pdf
    • https://cdn.shopify.com/s/files/1/0430/5308/8919/files/rakubugubelegebapaja.pdf
    • https://cdn.shopify.com/s/files/1/0440/6195/0117/files/is_saying_gg_ez_reportable.pdf
    • https://cdn.shopify.com/s/files/1/0431/0014/3770/files/ubuntu_init_d.pdf
    • https://cdn.shopify.com/s/files/1/0432/2390/8520/files/19437151212.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/learn_google_script.pdf
    • https://cdn.shopify.com/s/files/1/0437/1739/4586/files/36430491571.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_off0000a3d5.bin
22b52085583c999eca97513172da0ac89bda2742579fea378f84ff28f7114d46
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3D5 5660 bytes
font_01_sfnt_off0000b6eb.bin
ad8cad9dc089e40af4361b14c1001f52cb8b70c36746b874358869996af37bf4
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6EB 10996 bytes