Malicious PDF — malware analysis report

Static analysis result for SHA-256 5799046223e5fc99…

MALICIOUS

PDF

44.7 KB Created: 2020-08-03 00:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 740817bdbf75a9cec881702c55b1a25e SHA-1: d1114f732dde11ceb0aa2eb718d7dfac2a29fc33 SHA-256: 5799046223e5fc996d54a10e856a5ce6de5f03ac6b5b6ffcdf14bd026434c251
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple links pointing to shopify.com and other domains, ultimately redirecting to a malicious URL. The primary malicious URL identified is https://ttraff.cc/pify?keyword=music+an+appreciation. This indicates a likely phishing or malware distribution attempt by leveraging a link farm to obscure the final destination.

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=music+an+appreciation
    • http://files.gusconstantine.com/uploads/1/3/0/8/130814058/rexada.pdf
    • http://files.faithfestus.com/uploads/1/3/1/4/131438843/8476775.pdf
    • http://files.thistleandbirch.com/uploads/1/3/2/6/132683289/04b2414.pdf
    • http://files.joyspringseternal.com/uploads/1/3/1/3/131383255/509412.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9435/files/59705979716.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1414/files/tefaroropuvube.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5573/files/kemudim.pdf
    • https://cdn.shopify.com/s/files/1/0436/2010/6404/files/drag_racr_v2.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/gikurepuxesi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1017/8717/files/1834354289.pdf
    • https://cdn.shopify.com/s/files/1/0428/9999/6839/files/34112225386.pdf
    • https://cdn.shopify.com/s/files/1/0430/4722/3458/files/sunajusifowufapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/watireridifabevitenaze.pdf
    • https://cdn.shopify.com/s/files/1/0429/4852/6246/files/zekuwedadovot.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_off0000702c.bin
3aa4fa12dafa5787c15092b017ccf77e9c92ff375c9719a5796176d0d6cdc452		 pdf-font-stream PDF embedded font (sfnt) at offset 0x702C 4900 bytes
font_01_sfnt_off000080f1.bin
3fadb64416992fddfae305b22b1b5bfedb00aecbe59c253f8baef6295caf9067		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80F1 10728 bytes

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