Malicious PDF — malware analysis report

Static analysis result for SHA-256 f33c55435678eda4…

MALICIOUS

PDF

55.8 KB Created: 2020-08-10 19:39:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74135a7c27eca1ae8a925e5fd631d101 SHA-1: 9e3108130a93c15a7f8a25c153e3d03f4e3f4c73 SHA-256: f33c55435678eda4243639c8d2abbe5126a36058fc7c6d7eed12fda3a892ef5e
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking filename, suggesting a lure for users to download a malicious file. No scripts were extracted from this sample.

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=pan+application+form+pdf+editable
    • http://zopozali.darajafoundation.com/uploads/1/3/1/0/131070786/taseg-jipiti-wadetitalewefek-tirero.pdf
    • http://puzegoti.theprefabsproutproject.com/uploads/1/3/1/6/131607095/gaxidebojamul-xesuzi.pdf
    • http://files.thewrighttribe.com/uploads/1/3/0/7/130776503/440064c.pdf
    • http://fiman.martigraceashby.com/uploads/1/3/2/6/132682883/dozegumepo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4540/files/93970459645.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/pajedipubifu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6202/files/17231634374.pdf
    • https://cdn.shopify.com/s/files/1/0435/8271/8115/files/65751755484.pdf
    • https://cdn.shopify.com/s/files/1/0436/2836/3939/files/96380675180.pdf
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/skyrim_se_footprints.pdf
    • https://cdn.shopify.com/s/files/1/0435/0764/6630/files/fuviruxedufikubil.pdf
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/suwibe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/82595467958.pdf
    • https://cdn.shopify.com/s/files/1/0437/4901/5706/files/fijodik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/bamatutanagoruraziwibed.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/juminoroledexaxu.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006361.bin
048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6361 6744 bytes
font_01_sfnt_off00007446.bin
5dc6113f0a2b6101f7e34f7ea623fd4e8be17f175150e71727b3c5ad553022ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7446 5264 bytes
font_02_sfnt_off00008602.bin
d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8602 3720 bytes
font_03_sfnt_off00009165.bin
c89ffd63f3c95bfaaf230be7c0635e82f2298271c73864558b121eee975c3d46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9165 10676 bytes
font_04_sfnt_off0000b4c6.bin
2043f535f985a7f7dc10b0bed80e1534cf78852c9de4f4817b42e576ff640df1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4C6 8476 bytes

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