Malicious PDF — malware analysis report

Static analysis result for SHA-256 90cb76054621c1ce…

MALICIOUS

PDF

48.6 KB Created: 2020-08-29 09:37:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 050f1cd5868cd7107cd3dd06edd81c44 SHA-1: c1a45b43c06a88ce22fc69502c252aef079639c4 SHA-256: 90cb76054621c1ced0a6c35240252e782a3fd7167fbe98799b212871c1527f60
150 Risk Score

Malware Insights

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

The PDF contains a prominent link promising 'Free xbox gift card codes list' which redirects to a known malicious domain. This indicates a phishing or scam attempt designed to lure users to malicious infrastructure. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the embedded URLs and heuristics point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=free+xbox+gift+card+codes+list
    • https://cdn.shopify.com/s/files/1/0438/0046/1474/files/59231765607.pdf
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/98178997812.pdf
    • https://cdn.shopify.com/s/files/1/0428/7863/2095/files/41320082886.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://static.usrfiles.com/ugd/b8c837_df862a985ff243a591942ac85a3a11a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_41739e46bade405d8169c1762424a5e1.pdf
    • https://cdn.shopify.com/s/files/1/0432/8361/1801/files/najojirinepedabuwalazu.pdf
    • https://cdn.shopify.com/s/files/1/0461/3662/3257/files/blurred_lines_robin_thicke.pdf
    • https://cdn.shopify.com/s/files/1/0435/8357/0078/files/39279723932.pdf
    • https://cdn.shopify.com/s/files/1/0435/9385/9231/files/gogepug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/48183218015.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_off000062ff.bin
bfdf4412be9e9091bce82b3473e6b9fcc56a1bb611475b1622ba35e73721d109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62FF 5352 bytes
font_01_sfnt_off0000754b.bin
0d246ad56ed7d3b6f949363e45387e708281b39ccc44c7c1cc4a775ec7bb5464		 pdf-font-stream PDF embedded font (sfnt) at offset 0x754B 10456 bytes
font_02_sfnt_off0000994c.bin
bc741e1005f5426e119a0bbc04a8f9a0abb7910dd1ce00278e07a511916e2a3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x994C 18140 bytes

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