Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0f977660b820c0…

MALICIOUS

PDF

42.5 KB Created: 2020-08-24 17:54:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca2c566f076b49a239b0b66e63c3b128 SHA-1: 382fae9adef88bcde36686d6566fbedefeebd59c SHA-256: 1e0f977660b820c0c9c14e11090e40bec5a78a0868a7662dd325bfd68548f688
130 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, disguised with a lure for 'Titanic theme song piano sheet music easy'. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms the primary URL leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, many hosted on Shopify, likely to obscure the malicious redirector. No scripts were extracted, but the presence of a malicious redirector and link farm strongly suggests a phishing or malware delivery attempt.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=titanic+theme+song+piano+sheet+music+easy
    • http://zafolujid.stceciliacare.com/uploads/1/3/1/3/131383483/511913551.pdf
    • http://vixowavi.phsbusiness.com/uploads/1/3/1/3/131383314/xunesag_japupokofe.pdf
    • https://cdn.shopify.com/s/files/1/0428/7492/9319/files/39296291445.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/vinukitaxikulonejaxikux.pdf
    • https://cdn.shopify.com/s/files/1/0440/7672/8485/files/pilot_interview_preparation.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/34614558138.pdf
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/508_bus_schedule_nj_transit.pdf
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/75159718171.pdf
    • https://cdn.shopify.com/s/files/1/0428/8171/2287/files/33603884416.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/wopojosijuwulelikukikoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8340/files/83286894701.pdf
    • https://cdn.shopify.com/s/files/1/0433/8683/1004/files/report_format_balance_sheet_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/2736/5031/files/rental_lease_template_california.pdf
    • https://cdn.shopify.com/s/files/1/0431/9988/9571/files/74289320748.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_off0000609e.bin
655a0871ae3178101fb828a85e4023d4661e3290f757621bca49d8039e8a818c
pdf-font-stream PDF embedded font (sfnt) at offset 0x609E 5272 bytes
font_01_sfnt_off00007269.bin
2d1ca740f6933244b53446bd9de36b662eb6d1607c4735795c50730ea8d1fdcc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7269 13156 bytes