PDF malware analysis — malicious · 3dc47bd28d985a7a

MALICIOUS

PDF

48.4 KB Created: 2020-07-31 14:24:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 059811337d3de4d1d5d47d02c338fcde SHA-1: ccc81a3276d01b658f00694e637227e40dbeb0c8 SHA-256: 3dc47bd28d985a7aff9086feffdbd1be903e681a7c6434d1afce6087b1a5c3e3

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'ttraff.com'. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a mass of external PDF links, with the dominant host being 'cdn.shopify.com'. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDF documents from web content, aligning with the link-farming behavior.

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=batch+file+commands+pdf
- http://files.bickleighvalevillage.com.au/uploads/1/3/0/9/130969054/99caa2.pdf
- http://files.wistorian.com/uploads/1/3/1/6/131637631/jotuxunafex-fuvilasavi.pdf
- http://files.arctictreasures.shop/uploads/1/3/0/7/130776110/geweduvukezefipipigo.pdf
- https://cdn.shopify.com/s/files/1/0433/7503/4520/files/85598814671.pdf
- https://cdn.shopify.com/s/files/1/0431/5509/5708/files/58632829175.pdf
- https://cdn.shopify.com/s/files/1/0437/9289/2053/files/jojiku.pdf
- https://cdn.shopify.com/s/files/1/0429/8558/6849/files/zulodil.pdf
- https://cdn.shopify.com/s/files/1/0430/0167/5939/files/22135918390.pdf
- https://cdn.shopify.com/s/files/1/0434/7750/0056/files/pufizavemokow.pdf
- https://cdn.shopify.com/s/files/1/0431/1370/9730/files/nupejesajinaximu.pdf
- https://cdn.shopify.com/s/files/1/0434/1419/2284/files/74842772284.pdf
- https://cdn.shopify.com/s/files/1/0428/4999/2860/files/30159886922.pdf
- https://cdn.shopify.com/s/files/1/0428/4160/4263/files/zujaw.pdf
- https://cdn.shopify.com/s/files/1/0432/4907/4336/files/wifopasafisowupisib.pdf
- https://cdn.shopify.com/s/files/1/0428/1437/4047/files/40061483029.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mufuma.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/
- https://cdn.shopify.com/s/files/1/0430/0167/5939/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007ded.bin` `a172f72ed2b93e88d313f6c2c0261ed8a78663b622459c4bc0d644962cb7c612`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7DED	5136 bytes
`font_01_sfnt_off00008f3b.bin` `61a8b8d12962a3c7d9e6836d0ecd9cdbb333cd10eb0d3b432579b5c25fdf5363`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F3B	10972 bytes

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