Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30b1e463ef6d314…

MALICIOUS

PDF

49.2 KB Created: 2020-07-31 03:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e893d53cc5bc05646534c05bca14f18 SHA-1: 433da44221cd3abf804ea4cdffe8267f70696678 SHA-256: c30b1e463ef6d3143d48f82022155fdcfcec13e5c394ca2a144ee1c0eca87fa5
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm, with one directly pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a 'Basel stadtplan pdf' lure, suggesting a phishing or scam attempt. The primary malicious IOC is the redirector URL.

Heuristics 3

  • 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.
  • 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=basel+stadtplan+pdf
    • http://files.cesampr.com/uploads/1/3/0/7/130775828/5fafc064d1847d.pdf
    • http://files.eclecticdragonflygifts.com/uploads/1/3/0/7/130739928/silal-vorivutiw-mawodipa.pdf
    • http://files.bayouvillageschool.org/uploads/1/3/2/7/132740798/zesafelugibilerono.pdf
    • http://files.mrfleischer.com/uploads/1/3/0/7/130776599/xokopuvet.pdf
    • https://cdn.shopify.com/s/files/1/0431/8029/4306/files/74039541624.pdf
    • https://cdn.shopify.com/s/files/1/0427/8249/0791/files/56171164267.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/89256232962.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/zutexizudep.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/31635825965.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/8833338052.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/97783281692.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kesutuzijakakewinepubad.pdf
    • https://cdn.shopify.com/s/files/1/0428/7509/3159/files/kufofabu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2581582401.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_off000074d2.bin
629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D2 6440 bytes
font_01_sfnt_off000084c6.bin
3529dc1f411b288e472f23315ab0dc55092eebfb0cf949e9c6fc9719dca640b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84C6 4620 bytes
font_02_sfnt_off00009481.bin
d07540696b51fe7a10dbab04bfc867fc3edea43ed85ed0b1af8374f0049a6420		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9481 10280 bytes

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