Malicious PDF — malware analysis report

Static analysis result for SHA-256 d660272532f9ee1e…

MALICIOUS

PDF

43.4 KB Created: 2020-08-26 14:39:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a78cc74b85835a0994fa90fbe01c1d4 SHA-1: 30e63e0b46ad7d1606d2bf745b4b444f6bf736b6 SHA-256: d660272532f9ee1e86f95ef92a718a0e5902a77f0cefc3266bdcb288fa4ac7ca
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the redirector URL and references to 'avelina lesper biografia', likely a lure.

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.com/pify?keyword=avelina+lesper+biografia
    • http://files.ennstech.com/uploads/1/3/1/3/131380641/2fad4d.pdf
    • http://vuzixu.saublebeachnaturals.com/uploads/1/3/1/4/131453215/3624911.pdf
    • http://files.ajhtl.com/uploads/1/3/0/7/130775624/xomugizudud_gevamuveki_zasevikibarex.pdf
    • http://files.kivahouse.net/uploads/1/3/0/8/130873921/2748716.pdf
    • https://cdn.shopify.com/s/files/1/0435/3828/4696/files/nuvunitoporu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2696/4895/files/pin_diode_working.pdf
    • https://cdn.shopify.com/s/files/1/0432/5251/4979/files/6200251433.pdf
    • https://cdn.shopify.com/s/files/1/0437/4324/8533/files/andy_weir_the_martian.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/ganenuxefexewenalenanej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zijilo.pdf
    • https://cdn.shopify.com/s/files/1/0445/8423/9268/files/soxeporik.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fejekav.pdf
    • https://cdn.shopify.com/s/files/1/0432/2014/0191/files/17226251953.pdf
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/nower.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/diwewududiradipox.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_off00006bf6.bin
a9aa13d2c2fae7b24f2c91d310ecc51554abe516a43f937e77e960c80b27d6e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF6 5256 bytes
font_01_sfnt_off00007dee.bin
db4006b28b251c13845e8a8e305d6f75c748361214e0851ba2f1f7b2c3947d47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DEE 10156 bytes

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