Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7772c386839afb…

MALICIOUS

PDF

51.9 KB Created: 2020-08-02 22:58:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fdc71d3dba14033cfeb6e5872441004 SHA-1: fe3ab997c2ea23337ff10735cdaa10a9c142349b SHA-256: 2e7772c386839afb42c59e2b6f04da3b27c92d2ff92d30213419fe95bc3983e9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link that masquerades as a document download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the embedded URL points to a suspicious domain. The document body text further reinforces the lure by mentioning 'All company ceo name list pdf download'. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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/wb?keyword=all%20company%20ceo%20name%20list%20pdf%20download
    • http://files.fortbraggheadlandsconsortium.org/uploads/1/3/0/9/130969357/wezerisera.pdf
    • http://files.webloom.org/uploads/1/3/0/7/130776489/bibipawomelu.pdf
    • http://files.cartersarsfieldgilmore.com/uploads/1/3/1/4/131454304/9030460.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/vlc_to_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0428/9472/1187/files/75957293005.pdf
    • https://cdn.shopify.com/s/files/1/0430/3906/4225/files/1178946593.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/95896621822.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/rapitasoreguf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/vomojerizodomusuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51439980706.pdf
    • https://cdn.shopify.com/s/files/1/0433/9128/7452/files/notulepiduxofiselaxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8429/9936/files/33732948008.pdf
    • https://cdn.shopify.com/s/files/1/0438/0301/7378/files/46199228573.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/giwikawoxupagotoxiju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.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_off00008b83.bin
7b90fef6054a1768dce1704d85c3727d972c7d2a664b5582ac833ea40c486827		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B83 5388 bytes
font_01_sfnt_off00009de2.bin
df10cf296bff9825539c675375a826ed79f7d6c30724b0afc046f5f8a378ef0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE2 10592 bytes

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