Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a993ab8f43f24e…

MALICIOUS

PDF

88.2 KB Created: 2020-08-23 01:40:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8930cd004f68440b56d11eb4a3a1709 SHA-1: d94e951eb281257a327d2721751b0042a6862d3e SHA-256: 24a993ab8f43f24e5ff7a647fb730f9be267d71cc558d44ba397a53505c84ff4
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'aua guidelines non muscle invasive bladder cancer' and the URL 'https://ttraff.cc/pify?keyword=aua+guidelines+non+muscle+invasive+bladder+cancer', suggesting a lure to a malicious site. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, further supporting the malicious intent of directing users to external, potentially harmful, content.

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.cc/pify?keyword=aua+guidelines+non+muscle+invasive+bladder+cancer
    • http://files.schoolcafeclub.org/uploads/1/3/0/7/130775837/67d1455.pdf
    • http://files.whitethornequinehealth.com/uploads/1/3/0/7/130775373/laxebudamepawe-bufamadelilexon.pdf
    • http://depobap.prodigalsonsinc.org/uploads/1/3/0/8/130874474/kozarezipoxud_totopokadeb_jukiwobaj_lekikukulusat.pdf
    • https://cdn.shopify.com/s/files/1/0428/5582/5567/files/24251133208.pdf
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/3171903744.pdf
    • https://cdn.shopify.com/s/files/1/0435/0948/1624/files/lagufetalapisemer.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/pibukusekofafujil.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1690/files/vivezeburitaxafuxad.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/electronics_projects_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/bevizu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/free_academic_journals.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0440/9730/6776/files/93744785464.pdf
    • https://cdn.shopify.com/s/files/1/0430/6832/6042/files/hernia_abdominal_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5610/files/adjectives_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/0665/6666/files/85156440151.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101d2.bin
0abc27255a18d58fc476ffef41c3f473013b1b7bbbe870c6b3baf8dd99122ea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101D2 5448 bytes
font_01_sfnt_off00011440.bin
abcfa79c7156677fac5af9a7a1c6af40e38aac42f9c401830c5efb35cf9202a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11440 13056 bytes
font_02_sfnt_off00013d93.bin
06d84a79787f49517cba9647d12dd77c675544b9e46e70dbd0c3ec2b8d2a160e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D93 16132 bytes

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