PDF malware analysis — malicious · f583b7afaa6937ed

MALICIOUS

PDF

45.0 KB Created: 2020-07-27 10:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c45d47e504aa6ce639f86dd74bb17197 SHA-1: 24984ca48507c8a35981c5a2989b27603105ee4c SHA-256: f583b7afaa6937edd263f9fe0d7bbbe1fb8ad2006f2c6ccc5e7df453a64e9040

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 pointing to Shopify domains, which is characteristic of SEO link farms. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=comparing+decimals+worksheet+with+answers'. The document body, though heavily obfuscated, suggests a lure related to educational content. The combination of link farming and redirection indicates an attempt to drive traffic to malicious infrastructure.

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=comparing+decimals+worksheet+with+answers
- http://files.canenationband.com/uploads/1/3/0/8/130874042/fesebavap.pdf
- http://files.fusionbegins.com/uploads/1/3/0/9/130969576/gekoranuvopup.pdf
- http://files.concurrencedesigns.com/uploads/1/3/1/8/131856353/9354118.pdf
- http://files.concurrencedesigns.com/uploads
- https://cdn.shopify.com/s/files/1/0437/0654/8377/files/gefoduxizutixofafutuxi.pdf
- https://cdn.shopify.com/s/files/1/0434/5217/0392/files/20748810132.pdf
- https://cdn.shopify.com/s/files/1/0433/4354/4488/files/lodemojufuwitegipaxi.pdf
- https://cdn.shopify.com/s/files/1/0433/2994/5758/files/bujekasizanuwejetun.pdf
- https://cdn.shopify.com/s/files/1/0432/6490/1284/files/14212708043.pdf
- https://cdn.shopify.com/s/files/1/0429/5481/7690/files/saxuxerevewovonat.pdf
- https://cdn.shopify.com/s/files/1/0438/8398/7096/files/53896903148.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofifarigomikidapowokov.pdf
- https://cdn.shopify.com/s/files/1/0429/3502/5831/files/87713416992.pdf
- https://cdn.shopify.com/s/files/1/0433/3443/4974/files/tisowiga.pdf
- https://cdn.shopify.com/s/files/1/0433/3197/7370/files/83527987355.pdf
- https://cdn.shopify.com/s/files/1/0427/4647/8759/files/xovudulokinixikunijizize.pdf
- https://cdn.shopify.com/s/files/1/0437/4321/5767/files/jufuvuzubisisetenogakideg.pdf
- https://cdn.shopify.com/s/files/1/0432/5359/6310/files/72874673692.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_off00007254.bin` `ff01c0cb334ef73b1156daafc52ef4eed612747b31f5b49a5670770992030f03`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7254	5456 bytes
`font_01_sfnt_off000084c2.bin` `b6eaed391917e3f94784fe0000419ddda7937fa9c51dc57b6d695c111c2e0745`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x84C2	9896 bytes

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