PDF malware analysis — malicious · ef78d2ce60683412

MALICIOUS

PDF

39.9 KB Created: 2020-08-08 05:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 05072b66bcb58ef2afab1ca5cf0ec5d2 SHA-1: 5dd83a4b706bdd2ded77464c247caf6e4da481dd SHA-256: ef78d2ce60683412e25dd1ee5cde8a7d2a3bffd4aa187f060bf113c090df04bf

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=libros+budismo+theravada+pdf'. This suggests the document is designed to redirect users to potentially harmful content through a link farm strategy. No scripts were extracted from this sample.

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.cc/pify?keyword=libros+budismo+theravada+pdf
- http://jatile.thereadingkeeper.com/uploads/1/3/1/3/131380213/c5ee0b746cc.pdf
- http://files.isdnetwork.org/uploads/1/3/0/7/130776786/8876992.pdf
- http://files.labellaglo.com/uploads/1/3/1/4/131453679/31148bb9de6c1.pdf
- http://files.ghecca.com/uploads/1/3/2/6/132681512/kifejikuzevotid-tupegenilofov.pdf
- https://cdn.shopify.com/s/files/1/0429/5095/1066/files/mufitosowejatubomod.pdf
- https://cdn.shopify.com/s/files/1/0432/3550/8392/files/tifagokiso.pdf
- https://cdn.shopify.com/s/files/1/0430/6511/4775/files/lowes_wichita_falls_tx.pdf
- https://cdn.shopify.com/s/files/1/0436/3314/8062/files/satadif.pdf
- https://cdn.shopify.com/s/files/1/0435/5411/1656/files/webmail_at_brightok._net.pdf
- https://cdn.shopify.com/s/files/1/0433/3862/9270/files/48233139006.pdf
- https://cdn.shopify.com/s/files/1/0432/1378/3199/files/argument_writing_graphic_organizer.pdf
- https://cdn.shopify.com/s/files/1/0427/9320/5916/files/17251836258.pdf
- https://cdn.shopify.com/s/files/1/0440/4881/0149/files/rodobufetijate.pdf
- https://cdn.shopify.com/s/files/1/0439/3703/8494/files/gusulevawuvu.pdf
- https://cdn.shopify.com/s/files/1/0437/6087/7729/files/restaurant_franchise_operations_manual.pdf
- https://cdn.shopify.com/s/files/1/0433/0808/9499/files/10886311083.pdf
- https://cdn.shopify.com/s/files/1/0432/8102/3140/files/temik.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005e2f.bin` `cd70b07e2d2835a8cfa30fb075298c7d0e01e8cac2689d0492169da5fe6224aa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E2F	5392 bytes
`font_01_sfnt_off0000705b.bin` `bc381ff988dab1dc935ed0786389b58a371923387432f88ccc79772f3ac6deb6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x705B	10024 bytes

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