Malicious PDF — malware analysis report

Static analysis result for SHA-256 44fe06a3fd246d67…

MALICIOUS

PDF

41.9 KB Created: 2020-08-27 20:26:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c572567d6f4029769a096426551dfb2 SHA-1: 88c7fd72a570d7c31144bbbef8f0f66d3bd3ff19 SHA-256: 44fe06a3fd246d67b083ef07d252de1ae97eda7b31e498ddb4f9b8316891e0e5
150 Risk Score

Malware Insights

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

This PDF document contains a malicious redirector link to 'ttraff.com', indicating a likely phishing or scam attempt. The document also features a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious redirector is sufficient evidence of malicious intent.

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/pify?keyword=emerson+circles+pdf
    • http://files.ms-miller.org/uploads/1/3/2/7/132712623/4556377.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/nodolesujufesokujozerewuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/checklist_template_teachers_pay_teachers.pdf
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/wufiwa.pdf
    • https://cdn.shopify.com/s/files/1/0428/1237/5207/files/48103845273.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/xomamadov.pdf
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/78259093722.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5908/files/31038208034.pdf
    • https://cdn.shopify.com/s/files/1/0433/9708/7390/files/xejuvazukajudel.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/69270183146.pdf
    • https://cdn.shopify.com/s/files/1/0430/8415/2986/files/10146774329.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_off00005e9f.bin
93e2ea448382f9d6f7016d9b0c5bcad673572a9d078c28d7cf45ce006dd8dfe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9F 5048 bytes
font_01_sfnt_off00006fac.bin
27c88a8e15ba796fe3f83dfae4e0ae5d10f5f5dbfb7d93158d16a328ccb9578b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAC 2136 bytes
font_02_sfnt_off00007962.bin
8f6141dec7bda2043d6c52e036fc0bf622eb995890d0c43ada41f5f2903db7c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7962 9876 bytes

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