Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb7ff8cc6c3e6431…

MALICIOUS

PDF

103.6 KB Created: 2020-08-20 03:23:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2679fe8a882dabb3b7b4a2f9690242ef SHA-1: 628653c0d892d8de969e2f62407307bb6df42dbf SHA-256: bb7ff8cc6c3e6431f9c47bf98bdbbca234ef9db26c63eb1071fae78c23d2aace
142 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, masquerading as FDIC call report instructions. This is further supported by heuristics indicating a malicious redirector link and a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains the URL that is likely intended to trick the user into clicking it, leading to a callback phishing or tech-support scam scenario.

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.
  • 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
  • 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=fdic+call+report+instructions+september+2019
    • http://files.staccounting.co.uk/uploads/1/3/1/3/131397971/pisedegomeva.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/sobironefagolufaka.pdf
    • https://cdn.shopify.com/s/files/1/0432/8030/2244/files/bootstrap_template_for_tutorial_website.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/videsabami.pdf
    • https://cdn.shopify.com/s/files/1/0434/0046/2501/files/jizeguwawaromaka.pdf
    • https://cdn.shopify.com/s/files/1/0430/9667/0365/files/bethesda_system_for_reporting_cervical_cytology_third_edition.pdf
    • https://cdn.shopify.com/s/files/1/0439/3749/7243/files/computer_security_powerpoint_free_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72163988246.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/kidiwekumiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/xijazutaxosefo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7250/files/zawetexemapifuvasi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66916333827.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_off00015715.bin
4009ed989ce6b8e271a3263c6d219e2caebd12f3b06f43f85685742464bec1c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15715 5796 bytes
font_01_sfnt_off00016aaa.bin
013b0500b3de31380c64dd303acd7ab60a25b490d744beda7faad4df3a915310		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16AAA 11180 bytes

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